Dell 720H2C manuale d’uso

Back to Contents Page Dell™XPS™720H2COwner'sManual IfyoupurchasedaDell™nSeriescomputer,anyreferencesinthisdocumenttoMicrosoft ® Windows ® operating systems are not applicable. Information in this document is subject to change without notice. © 2007DellInc.All?[...]

Back to Contents Page  Appendix Dell™XPS™720Owner'sManual  Specifications  System Setup  Clearing Forgotten Passwords  Clearing CMOS Settings  Cleaning Your Computer  FCC Notices (U.S. Only)  Contacting Dell  Specifications  Processor Processor type Intel ® Core™2Du[...]

PCI 32 - bit PCI (SLOT3, SLOT5, SLOT6)  Connector three Connector size 124 pins Connector data width (maximum) 32 bits Bus speed 33 MHz PCI Express (SLOT1)  NOTE: If a graphics card is installed in each of the PCI Express x16 card slots in the dual - graphics configuration, the PCI Express x1 card slot is not accessible for use. Connector one[...]

amber light — Blinking amber indicates a problem with an installed device; solid amber indicates an internal power problem. Hard - drive access light green Network activity light (front panel) solid green indicates network connection Link integrity light (on integrated network adapter) green light — A good connection exists between a 10 - Mbps [...]

 System Setup  Overview Use system setup as follows: l  To change the system configuration information after you add, change, or remove any hardware in your computer l  To set or change a user - selectable option such as the user password l  To read the current amount of memory or set the type of hard drive installed Before you use s[...]

NOTE: Depending on your computer and installed devices, the items listed in this section may not appear, or may not appear exactly as listed.  System System Info Lists system information, such as the computer name, the BIOS version number and date, the system service tag, express service code and asset tag, and other system - specific informatio[...]

 NOTE: PXE is required only if you are booting to an operating system located on another computer. If a boot routine is not available from the remote system, the computer attempts to boot from the next device listed in the boot sequence. Integrated Audio ( On default) Enables or disables the onboard audio controller. l  Off — Integrated aud[...]

system parameters to tune system performance. These applications are not installed or supported by Dell. The default is Off.  NOTE: To enable overclocking of other system components, you first need to enable the Performance Application Support option in BIOS and then download an application like NVIDIA nTune version 5.0 or higher.  NOTE: Pres[...]

( Off default) power is restored after an AC power loss. l  Off — The system stays off after AC power is restored. l  On — The system powers on after AC power is restored. l  Last — The system returns to the previous state after AC power is restored. Auto Power On ( Off default) Disables or selects when to automatically turn on the c[...]

 Boot Sequence This feature allows you to change the boot sequence for the bootable devices installed on your computer.  Option Settings l  Diskette Drive — The computer attempts to boot from the floppy drive. If the floppy disk in the drive is not bootable, if no floppy disk is in the drive, or if there is no floppy drive installed in t[...]

for the current boot only, and then press <Enter>. For example, if you are booting to a USB memory key, highlight USB Flash Device and press <Enter>.  Changing Boot Sequence for Future Boots  1. Enter system setup (see Entering System Setup ).  2. Use the arrow keys to highlight the Boot Sequence menu option and press <Enter[...]

7. Disconnect the keyboard and mouse, then disconnect the computer and monitor from their electrical outlets.  8. Press the power button on the computer to ground the system board.  9. Open the computer cover (see Removing the Computer Cover ).  10. Locate the 2 - pin password jumper on the system board (see System Board Components ), and [...]

l  Wipe the keyboard, computer, and plastic part of the monitor with a soft cleaning cloth moistened with water. Do not soak the cloth or let water drip inside your computer or keyboard.  Mouse If your screen cursor skips or moves abnormally, clean the mouse. To clean a non - optical mouse:  1. Turn the retainer ring on the underside of yo[...]

and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause harmful interference with radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you will be required to correct the interference at yo[...]

Argentina (Buenos Aires) International Access Code: 00 Country Code: 54 City Code: 11 E- mail for Desktops and Portables la - techsupport@dell.com E- mail for Servers and EMC ® Storage Products la_enterprise@dell.com Customer Service toll - free:0 - 800 - 444 - 0730 Technical Support – DellPowerApp™,DellPowerEdge™,Dell?[...]

Brunei Country Code: 673 Customer Service (Penang, Malaysia) 6046333101 or toll - free: 801 1012 Transaction Sales (Penang, Malaysia) 6046333101 or toll - free: 801 1012 Canada (North York, Ontario) International Access Code: 011 Online Order Status www.dell.ca/ostatus  Online Support support.ca.dell.com AutoTech (automated Hardware [...]

Technical Support, Customer Service, Sales 0800 - 012 - 0231 Czech Republic (Prague) International Access Code: 00 Country Code: 420 Online Support support.euro.dell.com czech_dell@dell.com Technical Support 225372727 Customer Service 225372707 Fax 225372714 Technical Fax 225372728 Switchboard 225372711 Denmark (Copenhagen) Int[...]

Germany (Frankfurt) International Access Code: 00 Country Code: 49 City Code: 69 Technical Support for XPS computers only 06997927222 Technical Support 0699792 - 7200 Home/Small Business Customer Service 0180 - 5 - 224400 Global Segment Customer Service 0699792 - 7320 Preferred Accounts Customer Service 0699792 - 7320 Large Accounts [...]

toll - free: 1800 - 4252067 Sales  Large Corporate Accounts 1600338044 Home and Small Business 1600338046 Ireland (Cherrywood) International Access Code: 00 Country Code: 353 City Code: 1 Online Support support.euro.dell.com dell_direct_support@dell.com Technical Support  XPS computers only 1850200722 Business compu[...]

Public Sales – government agencies, educational institutions, and medical institutions 044 - 556 - 5963 Global Segment Japan 044 - 556 - 3469 Individual User 044 - 556 - 1657 Individual User Online Sales 044 - 556 - 2203 Individual User Real Site Sales 044 - 556 - 4649 Switchboard 044 - 556 - 4300 Korea (Seoul) International Access Code: 001 Coun[...]

City Code: 20 Relational Sales 0206745000 Home/Small Business Sales Fax 0206744775 Relational Sales Fax 0206744750 Switchboard 0206745000 Switchboard Fax 0206744750 New Zealand International Access Code: 00 Country Code: 64 Online Support support.ap.dell.com  support.ap.dell.com/contactus Technical[...]

Singapore (Singapore) International Access Code: 005 Country Code: 65 Online Support support.ap.dell.com Technical Support – XPS computers only toll - free:18003947464 Technical Support – Dimension, Inspiron, and Electronics and Accessories toll - free:18003947430 Technical Support – OptiPlex, Latitude, and Dell Precision[...]

Taiwan International Access Code: 002 Country Code: 886 Technical Support – XPS computers only toll - free:00801863085 Technical Support – OptiPlex, Latitude, Inspiron, Dimension, and Electronics and Accessories toll - free:00801861011 Technical Support – Servers and Storage toll - free:00801601256 Customer Servi[...]

Back to Contents Page  U.S.A. (Austin, Texas) International Access Code: 011 Country Code: 1 Higher Education toll - free:1 - 800 - 274 - 7799 Printers, Projectors, PDAs, and MP3 Players toll - free:1 - 877 - 459 - 7298 Customer Service toll - free:1 - 800 - 624 - 9897 Automated Order Status toll - free:1 - 800 - 433 - 9014 Small Bus[...]

Back to Contents Page  Finding Information Dell™XPS™720Owner'sManual NOTE: Some features or media may be optional and may not ship with your computer. Some features or media may not be available in certain countries. NOTE: Additional information may ship with your computer.  What Are You Looking For?  Find It Here l ?[...]

Back to Contents Page  Use the Service Tag to identify your computer when you use support.dell.com or contact support. l  Enter the Express Service Code to direct your call when contacting support. l  Solutions — Troubleshooting hints and tips, articles from technicians, online courses, and frequently asked questions l  Community — [...]

Back to Contents Page  Glossary Dell™XPS™720Owner'sManual Terms in this Glossary are provided for informational purposes only and may or may not describe features included with your particular computer.  A AC — alternating current — The form of electricity that powers your computer when you plug the AC adapter power c[...]

CD - RW — CD rewritable — A rewritable version of a CD. Data can be written to a CD - RW disc, and then erased and written over (rewritten). CD - RW drive — A drive that can read CDs and write to CD - RW (rewritable CDs) and CD - R (recordable CDs) discs. You can write to CD - RW discs multiple times, but you can write to CD - R discs only on[...]

EIDE — enhanced integrated device electronics — An improved version of the IDE interface for hard drives and CD drives. EMI — electromagnetic interference — Electrical interference caused by electromagnetic radiation. ENERGY STAR ® — Environmental Protection Agency requirements that decrease the overall consumption of electricity. EPP[...]

megahertz (MHz), gigahertz (GHz), or terahertz (THz).  I IC — integrated circuit — A semiconductor wafer, or chip, on which thousands or millions of tiny electronic components are fabricated for use in computer, audio, and video equipment. IDE — integrated device electronics — An interface for mass storage devices in which the controller[...]

memory module — A small circuit board containing memory chips, which connects to the system board. MHz — megahertz — A measure of frequency that equals 1 million cycles per second. The speeds for computer processors, buses, and interfaces are often measured in MHz. Mini PCI — A standard for integrated peripheral devices with an emphasis on [...]

 R RAID — redundant array of independent disks — Amethodofprovidingdataredundancy.SomecommonimplementationsofRAIDincludeRAID0,RAID1, RAID5,RAID10,andRAID50. RAM — random - access memory — The primary temporary storage area for program instructions and data. Any information[...]

S- video TV - out — A connector used to attach a TV or digital audio device to the computer. SXGA — super - extended graphics array — A video standard for video cards and controllers that supports resolutions up to 1280 x 1024. SXGA+ — super - extended graphics array plus — A video standard for video cards and controllers that supports re[...]

power for 1 hour or 33 W for 2 hours. wallpaper — The background pattern or picture on the Windows desktop. Change your wallpaper through the Windows Control Panel. You can also scan in your favorite picture and make it wallpaper. WLAN — wireless local area network. A series of interconnected computers that communicate with each other over the [...]

Back to Contents Page  Removing and Installing Parts Dell™XPS™720Owner'sManual  Before You Begin This chapter provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that a component can be replaced by performing the removal procedure in reverse order[...]

l  In Windows Vista, c lick Start , click the arrow in the lower - right corner of the Start menu as shown below, and then click Shut Down . The computer turns off after the operating system shutdown process is complete.  3. Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automat[...]

 System Board Components 1 optical drive bays (4) 2 floppy drive/media card reader 3 hard drive bays (4) 4 card fan 5 liquid cooling assembly   1 white memory module connectors (DIMM_1 - 2) 2 black memory module connectors (DIMM_3 - 4) 3 hard drive fan connector (FAN_HDD) 4 IDE drive connector (IDE) 5 front I/O panel connector (FRONTPANEL)[...]

 Memory You can increase your computer memory by installing memory modules on the system board. Your computer supports DDR2 memory. For additional information on the type of memory supported by your computer, see Memory .  DDR2 Memory Overview l  DDR2 memory modules should be installed in pairs of matched memory size and speed . If the DDR[...]

 Addressing Memory Configurations If you are using a 32 - bit operating system such as Microsoft ® WindowsVista™,yourcomputerwillsupportamaximumof4GBofmemory.Ifyouareusinga 64 - bit operating system, your computer will support a maximum of 8 GB (2 - GB DIMMs in each of the four slots) of m[...]

 6. Replace the computer cover (see Replacing the Computer Cover ).  7. Connect your computer and devices to electrical outlets, and turn them on.  8. When the message appears stating that memory size has changed, press <F1> to continue.  9. Log on to your computer.  10. Right - click the My Computer icon on your Windows deskto[...]

 Removing PCI and PCI Express Cards  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Disconnect any cables connected to the card.  4. Press down the tab on the top of the card retainer at the appropriate card slot and pivot the card retainer back through the chassis[...]

 8. Rotate the card retainer back into its original position; push its tip so that its tab clicks into place.  9. If present, lower the card retention device that lays over the installed cards and snap it into place.  10. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlet[...]

 8. Gently pull the securing tab (if present) and place the card in the connector. Press down firmly and ensure that the card is fully seated in the slot.  9. Connect any cables that should be attached to the card. See the documentation for the card for information about the card's cable connections.  10. Rotate the card retainer back[...]

 1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. If present, press the tab on the card retention device that lays over the installed cards and rotate it upwards to gain full access to the card.  4. Gently securing both graphics cards with one hand, remove the graphics [...]

 8. Install a filler bracket in the empty card - slot opening. If you are replacing the card, see Installing a PCI Express Graphics Card in a Dual Configuration .  9. Rotate the card retainer back into its original position; push its tip so that its tab clicks into place.  10. If present, lower the card retention device that lays over the [...]

 5. Remove the filler bracket or existing graphics card (see Removing a PCI Express Graphics Card from a Dual Configuration ) to create a card - slot opening.  6. Prepare the card for installation. See the documentation that came with the card for information on configuring the card, making internal connections, or otherwise customizing it fo[...]

 12. If present, lower the card retention device that lays over the installed cards and snap it into place.  13. Replace the computer cover (see Replacing the Computer Cover ), reconnect the computer and devices to electrical outlets, and then turn them on.  Network Adapter and Sound Card Settings If you installed a sound card:  1. Ente[...]

 About Serial ATA Drives Your computer supports up to four serial ATA hard drives and two serial ATA optical drives. Serial ATA drives provide the following benefits by transferring data using serial technology and flexible cables that are thinner and longer than IDE cables: l  Improved cable routing facilitates more efficient airflow inside [...]

  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Disconnect the power cable and the data cable from the hard drive.  4. Press the blue tabs on each side of the hard drive bracket toward each other and slide the drive up and out of the hard - drive bay.  5. Ensur[...]

Installing a Hard Drive   1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove the existing hard drive, if applicable (see Removing a Hard Drive ).  4. Prepare the new hard drive for installation and check the documentation for the hard drive to verify that the dr[...]

 9. Replace the computer cover (see Replacing the Computer Cover ).  10. Connect the computer and devices to electrical outlets, and turn them on. See the documentation that came with the drive for instructions on installing any software required for drive operation.  Drive Panel   Removing the Drive Panel  1. Follow the procedure[...]

 5. Set the drive panel aside in a secure location.  Replacing the Drive Panel  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Align the drive panel tabs with the side - door hinges.  4. Rotate the drive panel toward the computer until it snaps into place on the[...]

 5. Slide the drive release latch towards the base of the computer to release the shoulder screw, and then slide the drive out of the drive bay.  6. Replace the drive panel (see Replacing the Drive Panel ).  7. Replace the computer cover (see Replacing the Computer Cover ).  8. Connect the computer and devices to electrical outlets, and[...]

5. If no screws are attached to the new floppy drive, check the inside of the drive panel for shoulder screws. If screws are present, attach the screws to the new drive.  6. Slide the floppy drive into the drive bay until it clicks into place.  7. Connect the power and data cables to the back of the floppy drive.  8. Check all cable connec[...]

 2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove the drive panel (see Removing the Drive Panel ).  4. Disconnect the power and data cables from the back of the Media Card Reader.  5. Slide the drive release latch towards the base of the computer to release the shoulder screw, and then slide the media card rea[...]

 3. Remove the drive panel (see Removing the Drive Panel ).  4. Remove the existing media card reader, if applicable (see Removing a Media Card Reader ).  5. If no screws are attached to the Media Card Reader, check the inside of the drive panel for shoulder screws. If screws are present, attach the screws to the new card reader.  6. Sl[...]

Removing an Optical Drive  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove the drive panel (see Removing the Drive Panel ).  4. Disconnect the power and data cables from the back of the drive.  5. Slide the drive release latch towards the base of the computer[...]

Installing an Optical Drive  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove the drive panel (see Removing the Drive Panel ).  4. Remove the existing optical drive, if applicable (see Removing an Optical Drive ).  5. Prepare the optical drive for installation[...]

 9. Check all cable connections and fold cables out of the way to avoid blocking airflow between the fan and cooling vents.  10. Replace the drive panel (see Replacing the Drive Panel ).  11. Replace the computer cover (see Replacing the Computer Cover ).  12. Connect your computer and devices to their electrical outlets, and turn them [...]

3. Remove the drive panel (see Removing the Drive Panel ).  4. Slide the drive release latch towards the base of the computer to release the shoulder screw(s) on the optical drive(s), then slide the optical drive(s) forward, out of the way.  5. Remove any full - length expansion cards (see Removing PCI and PCI Express Cards ).  6. Disconne[...]

 Installing the Liquid Cooling Assembly  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Apply thermal grease to the top of the processor as needed.  4. Align the screw holes on the liquid cooling assembly with the holes on the base of the computer, then tighten the[...]

 1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Disconnect the power cables from the POWER1 and POWER2 connectors (see System Board Components ) on the system board.  4. Remove the liquid cooling assembly (see Removing the Liquid Cooling Assembly ).  5. Push down a[...]

 4. Set the processor lightly in the socket and ensure that the processor is level in the socket. When the processor is positioned correctly, press it with minimal pressure to seat it.  5. When the processor is fully seated in the socket, close the processor cover.  6. Pivot the socket release lever back toward the socket and snap it into [...]

 6. In succession, carefully pull on each corner of the fan to detach the rubber grommets securing the fan to the fan cage.  Installing the Card Fan  1. With the fan power cable oriented downward, align the rubber grommets in the fan with the holes in each corner of the fan cage, then pull the grommets through until they snap into place. ?[...]

 6. Connect your computer and devices to electrical outlets, and then turn them on.  Removing the Optional Hard Drive Fan  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove all installed memory modules (see Removing Memory ).  4. Disconnect the fan cable fro[...]

2. Remove the computer cover (see Removing the Computer Cover ).  3. Disconnect the fan cable from the FAN_CAGE connector on the system board (see System Board Components ).  4. Remove any full - length expansion cards (see Removing PCI and PCI Express Cards ).  5. Remove the two screws securing the card fan assembly, then remove the assem[...]

 1. Transfer components from the existing system board to the replacement system board, if applicable.  2. Orient the system board assembly by aligning the notches on the bottom of the assembly with the tabs on the computer.  3. Slide the system board assembly toward the back of the computer until the assembly clicks into place.  4. Rep[...]

 DC Power Connector P1   1- KW Power Supply 750 - KW Power Supply  Pin Number  Signal name  18 - AWG Wire Color  Signal name  18 - AWG Wire Color 1 +3.3 VDC Orange +3.3 VDC Orange 2 +3.3 VDC/SE Orange +3.3 VDC/SE Orange 3 COM Black COM Black 4 +5 VDC Red +5 VDC Red 5 COM Black COM Black 6 +5 VDC Red +5 VDC Red 7 COM Black CO[...]

 DC Power Connector P2  DC Power Connector P3 (Graphics Card)  23 +5 VDC Red +5 VDC Red 24 COM Black COM Black   1- KW Power Supply 750 - KW Power Supply  Pin Number  Signal name  18 - AWG Wire Color  Signal name  18 - AWG Wire Color 1 +12 VC DC Blue/White +12 VC DC Blue/White 2 +12 VC DC Blue/White +12 VC DC Blue/Whit[...]

DC Power Connector P4 (Graphics Card)  DC Power Connector P5 (FD1)  DC Power Connector P6 and P7 (BAY1 and Bay2)  DC Power Connectors P8 and P9 (HDD0 and HDD1)   1- KW Power Supply 750 - KW Power Supply  Pin Number  Signal name  18 - AWG Wire Color  Signal name  18 - AWG Wire Color 1 +12 VE DC Blue/Yellow +12 VC DC Blu[...]

 DC Power Connectors P10 - P13 (HDD2 and HDD5)  DC Power Connectors P14 (Peripheral)  DC Power Connector P15 (Graphics Card – 1- KW PSU Only)   1- KW Power Supply 750 - KW Power Supply  Pin Number  Signal name  18 - AWG Wire Color  Signal name  18 - AWG Wire Color 1 +3.3 VDC Orange +3.3 VDC Orange 2 COM Black COM Bla[...]

 DC Power Connector P16 (Graphics Card – 1- KW PSU Only)  Removing the Power Supply  1. Follow the procedures in Before You Begin .  2. Remove the computer cover (see Removing the Computer Cover ).  3. Follow the DC power cables that stem from the power supply and disconnect each connected power cable.  4. Remove all hard drives[...]

 8. Remove the four screws that attach the power supply to the back of the computer chassis.  9. Gather the power supply bundles that stem from the power supply, for easy removal.  10. Slide the power supply towards the front of the computer to free it from the securing tabs on the computer chassis.  11. Slide the power supply toward th[...]

 1. Slide the power supply into place, ensuring that the tabs on the rear wall of the computer chassis latch into place.  2. Replace the four screws that secure the power supply to the back of the computer chassis.  3. Replace the two hard drive bays.  4. Replace all hard drives installed in the interior hard drive bays (see Installing [...]

 2. Remove the computer cover (see Removing the Computer Cover ).  3. Remove any full - length expansion cards (see Removing PCI and PCI Express Cards ).  4. Remove the processor airflow shroud (see Removing the Liquid Cooling Assembly ).  5. Disconnect the front fan and the card fan from the system board.  6. Unscrew the two screws [...]

 Battery   Replacing the Battery A coin - cell battery maintains computer configuration, date, and time information. The battery can last several years. If you have to repeatedly reset time and date information after turning on the computer, replace the battery.  To replace the battery:  1. Record all the screens in system setup (see[...]

 2. Loosen the captive screw securing the stand to the base of the computer.  3. Gently slide the stand back, towards the rear of the computer, then pull the stand away from the computer to remove it.  Replacing the Computer Cover     1. Ensure that all cables are connected, and fold cables out of the way.  2. Ensure that no[...]

 5. Carefully, lift the rear of the computer and slide the stabilizing feet outward into the open position.  6. With the help of an assistant, carefully set the computer upright.  7. Connect your computer and devices to electrical outlets, and turn them on. Back to Contents Page  1 computer cover 2 cover hinge tabs 3 hinge slots NOTICE:[...]

Back to Contents Page  Optimizing for Greater Performance Dell™XPS™720Owner'sManual  Understanding Dual - Graphics Technology  Understanding CPU Overclocking  Understanding Dual - Graphics Technology With dual - graphics technology, an optional second PCI Express graphics card will significantly increase graph[...]

Back to Contents Page  Dell™QuickSet Dell™XPS™720Owner'sManual Dell™QuickSetallowsyoutoselectandadjustLEDlighteffects,alsoknownasLightFX™. You can start QuickSet by either clicking , double - clicking , or right - clicking the QuickSet icon in the Microsoft ® Windo[...]

Back to Contents Page  Setting Up and Using Your Computer Dell™XPS™720Owner'sManual  Front and Back View of the Computer  Front View  Front and Back View of the Computer  Attaching the Computer Stand  Installing Your Computer in an Enclosure  Connecting Monitors  About Your RAID Configurat[...]

 Front I/O Connectors  Back View setup (see System Setup ). 10 power button Press to turn on the computer.  NOTE: The power button can also be used to wake the system or to place it into a power - saving state (see Power Management Options in Windows XP ). NOTICE: To avoid losing data, do not use the power button to turn off the computer. [...]

 Back I/O Connectors 1 power connector Insert the power cable. The appearance of this connector may differ from what is pictured. 2 back panel LEDs (2) Multi - colored lights provide illumination for the I/O panel on the back of the computer.  NOTE: The color of the back panel LEDs can be adjusted in system setup (see System Setup ). 3 back I[...]

 Attaching the Computer Stand     1. Follow the procedures in Before You Begin .  2. Remove the thumb screw that is installed on the base of the computer.  connectors on the card and on the back of the computer when setting up multiple network connections (such as a separate intra - and extranet).  NOTE: Dell recommends that[...]

 3. Insert the six alignment tabs into the corresponding slots on the base of the computer, then slide the stand forward until all six tabs catch in the slots.  4. Ensure that the screw hole on the stand is aligned with the screw hole on the base of the computer.  5. Insert the captive screw into the screw hole, then tighten the screw to s[...]

l  Do not install your computer in an enclosure that does not allow airflow. Restricting the airflow impacts your computer's performance, possibly causing it to overheat.  Connecting Monitors   CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product Information Guide . CAUTIO[...]

 Connecting a Monitor (Without an Adapter)   1. Save and close all open files and exit all open programs.  2. Shut down the operating system: l  In Windows XP, click Start ® Turn Off Computer ® Turn off . l  InWindowsVista™,clicktheWindowsVistaStartbutton , click the arrow in the lower - right corner[...]

 3. Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 4 seconds to turn them off.  4. Connect the DVI - to - VGA adapter to the VGA connector on your monitor, and then connect[...]

To connect a monitor with a DVI connector, use the (white) DVI port on the primary graphics card. To connect a monitor with a VGA connector, use the (blue) VGA port on the primary graphics card.  Connecting Two or More Monitors   1. Save and close all open files and exit all open programs.  2. Shut down the operating system: l  In Wi[...]

 4. Disconnect the computer and all attached devices from their electrical outlets.  5. Connect one end of the S - video cable to the TV - OUT connector on the back of the computer.  6. Connect the other end of the S - video cable to the S - video input connector on your TV.  7. Connect one monitor, as needed, with a DVI or VGA connecto[...]

Another advantage of a RAID level 0 configuration is that it utilizes the full storage capacities of the drives. For example, two 120 - GB hard drives combine to provide 240 GB of hard drive space on which to store data.  RAID Level 1 Configuration RAID level 1 uses a data - redundancy storage technique known as "mirroring" to enhance [...]

If a drive failure occurs, subsequent read and write operations are directed to the other surviving drives. A replacement drive can then be rebuilt using the data from the surviving drives. Also, because data is duplicated on the primary and additional drives, four 120 - GB RAID level 1 drives collectively have a maximum of 360 - GB on which to sto[...]

To create a RAID 1 configuration, use the arrow keys to select Mirroring . To create a RAID 0+1 configuration, use the arrow keys to select Stripe Mirroring . To create a RAID 5 configuration, use the arrow keys to select RAID 5 .  5. Press <Tab> to navigate to the Free Disks field.  6. Use the up - and down - arrow keys to select a har[...]

The Free Disk Selection window appears.  8. Click to select the drives that will make up the RAID configuration, click Next , and then click Next again. The Clearing System Data window appears.  9. Click Next .  10. Click Finish to create the RAID configuration. The MediaShield RAID management utility window appears and lists the array alo[...]

 6. Click Next .  7. Under Free Disk Selection , select the hard drive(s) you want to include in the (migrated) array by clicking the checkbox beside it.  8. Click Finish . The MediaShield RAID management utility window appears and displays the status of the upgrade/migration process along with any other installed hard drives.  Rebuildi[...]

A CD player includes the following basic buttons: A DVD player includes the following basic buttons: These controls may not exist on all players in the system. For more information on playing CDs, DVDs, or BDs, click Help on the media player (if available).  Copying CD, DVD, and Blu - rayDisc™(BD)Media This section applies only to com[...]

continue. The computer reads your source disc and copies the data to a temporary folder on your computer hard drive. When prompted, insert a blank disc into the drive and click OK . l  If you have two optical drives , select the drive into which you have inserted your source disc and click the Copy Disc button to continue. The computer copies th[...]

l  Music MP3 files can be played only on MP3 players or on computers that have MP3 software installed. l  Use a blank CD - RW to practice CD recording until you are familiar with CD recording techniques. If you make a mistake, you can erase the data on the CD - RW and try again. You can also use blank CD - RWs to test music file projects befo[...]

 Network Setup Wizard The Microsoft Windows operating system provides a Network Setup Wizard to guide you through the process of sharing files, printers, or an Internet connection between computers in a home or small office. Windows XP:  1. Click Start , point to All Programs ® Accessories ® Communications , and then click Network Setup Wiz[...]

After the information has been copied, the Completing the Collection Phase screen appears.  8. Click Finish . To transfer data to the new computer:  1. On the Now go to your old computer screen on the new computer, click Next .  2. On the Where are the files and settings? screen, select the method you chose for transferring your files and [...]

3. Under or pick a Control Panel icon , click Power Options .  4. Define your hibernate settings on the Power Schemes tab, Advanced tab, and Hibernate tab. To exit from hibernate mode , press the power button. The computer may take a short time to exit from hibernate mode. Because the keyboard and mouse do not function in hibernate mode, pressin[...]

 3. In the Performance and maintenance window, click Conserving power on your computer .  Power Management Options in Windows Vista The Microsoft Vista power management features can reduce the amount of electricity your computer uses when it is on and you are not using it. You can reduce power to just the monitor or the hard drive, or you can[...]

Back to Contents Page  Troubleshooting Dell™XPS™720Owner'sManual  Solving Problems Follow these tips when you troubleshoot your computer: l  If you added or removed a part before the problem started, review the installation procedures and ensure that the part is correctly installed. l  If a peripheral device does no[...]

Run the Hardware Troubleshooter — See Troubleshooting Software and Hardware Problems .  Run the Dell Diagnostics — See Dell Diagnostics .  Optical drive problems  Adjust the Windows volume control — l  Click the speaker icon in the lower - right corner of your screen. l  Ensure that the volume is turned up by clicking the slide[...]

 Check the Microsoft Outlook ® Express security settings — If you cannot open your e - mail attachments: 1.  In Outlook Express, click Tools ® Options ® Security . 2.  Click Do not allow attachments to remove the checkmark, as needed.  Check the telephone line connection Check the telephone jack Connect the modem directly to the[...]

1.  Click Start ® Control Panel ® Programs ® Programs and Features . 2.  Select the program you want to remove. 3.  Click Uninstall . 4.  See the program documentation for installation instructions.  drive letter : is not accessible. The device is not ready — The drive cannot read the disk. Insert a disk into the drive and try [...]

Test the keyboard — Connect a properly working keyboard to the computer, then try using the keyboard.  Run the Hardware Troubleshooter — See Troubleshooting Software and Hardware Problems .  Lockups and Software Problems   The computer does not start up  Check the diagnostic lights — See Diagnostic Lights .  Ensure that the [...]

3.  Follow the instructions on the screen.  A solid blue screen appears  Turn the computer off — If you are unable to get a response by pressing a key on your keyboard or moving your mouse, press and hold the power button for at least 8 to 10 seconds (until the computer turns off), and then restart your computer.  Other software probl[...]

 Check the mouse settings —  Windows XP 1.  Click Start ® Control Panel ® Mouse . 2.  Adjust the settings as needed. Windows Vista : 1.  Click Start ® Control Panel ® Hardware and Sound ® Mouse . 2.  Adjust the settings as needed.  Reinstall the mouse driver — See Drivers .  Run the Hardware Troubleshooter — See T[...]

l  Ensure that the processor power cable is securely connected to the system board power connector (POWER2) (see System Board Components ). l  Remove and then reinstall all memory modules (see Memory ). l  Remove and then reinstall any expansion cards, including graphics cards (see Removing PCI and PCI Express Cards ).  Eliminate interf[...]

 Verify that the scanner is recognized by Microsoft Windows —  Windows XP: 1.  Click Start ® Control Panel ® Printers and Other Hardware ® Scanners and Cameras . 2.  If your scanner is listed, Windows recognizes the scanner. Windows Vista : 1.  Click Start ® Control Panel ® Hardware and Sound ® Scanners and Cameras . 2.  I[...]

Video and Monitor Problems   The screen is blank  The screen is difficult to read  Check the monitor cable connection —  l  Ensure that the monitor cable is connected to the correct graphics card (for dual graphics card configurations). l  If you are using the optional DVI - to - VGA adapter, ensure that the adapter is correc[...]

 Check the monitor settings — See the monitor documentation for instructions on adjusting the contrast and brightness, demagnetizing (degaussing) the monitor, and running the monitor self - test.  Power Lights  The power button light located on the front of the computer illuminates and blinks or remains solid to indicate different states[...]

 Beep Codes Your computer might emit a series of beeps during start - up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. For example, beep code 1 - 3 - 1 (one possible beep code) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the com[...]

 System Messages 3-2-4 Keyboard Controller Test failure 3-3-1 NVRAM power loss 3-3-2 Invalid NVRAM configuration 3-3-4 Video Memory Test failure 3-4-1 Screen initialization failure 3-4-2 Screen retrace failure 3-4-3 Search for video ROM failure 4-2-1 No timer tick 4-2-2 Shutdown failure 4-2-3 Gate A20 failure 4-2-4 Unexpected interrupt in protec[...]

 Dell Diagnostics   When to Use Dell Diagnostics If you experience a problem with your computer, perform the checks in Solving Problems and run Dell Diagnostics before you contact Dell for technical assistance. Run Dell Diagnostics from your hard drive or from the Drivers and Utilities media.  Starting Dell Diagnostics From Your Hard Dr[...]

 1. Turn on your computer.  2. Press the eject button on the front of the optical drive to open the drive tray.  3. Place the Drivers and Utilities media in the center of the drive tray, then press the eject button or gently push on the tray to close it.  4. Restart the computer.  5. When the DELL logo appears, press <F12> imme[...]

 Drivers  What Is a Driver? A driver is a program that controls a device such as a printer, mouse, or keyboard. All devices require a driver program. A driver acts like a translator between the device and any other programs that use the device. Each device has its own set of specialized commands that only its driver recognizes. Dell ships you[...]

If a problem occurs on your computer after you install or update a driver, use Windows Device Driver Rollback to replace the driver with the previously installed version. Windows XP:  1. Click Start and click Control Panel .  2. Under Pick a Category ® Performance and Maintenance ® System ® System Properties ® Hardware ® Device Manager .[...]

4. Right - click the device for which the driver is being reinstalled, then click Properties .  5. Click Driver ® Update Driver ® Install from a list or specific location (Advanced) ® Next .  6. Click to check Include this location in the search , then click Browse and navigate to where the driver files are located on your hard drive.  [...]

 1. Click Start .  2. In the Start Search box, type System Restore and press <Enter>.  3. Click Next and follow the remaining prompts on the screen. In the event that System Restore did not resolve the issue, you may undo the last system restore.  Undoing the Last System Restore Windows XP :  1. Click Start ® All Programs ® A[...]

If you do not press <Ctrl><F11> in time, let the computer finish starting, and then restart the computer again.  3. Click Restore and click Confirm . The restore process takes approximately 6 to 10 minutes to complete.  4. When prompted, click Finish to reboot the computer.  5. When prompted, click Yes . The computer restarts. [...]

 5. Click Dell Factory Image Restore . The Dell Factory Image Restore welcome screen appears.  6. Click Next. The Confirm Data Deletion screen appears.  7. Click the checkbox to confirm that you want to continue reformatting the hard drive and restoring the system software to the factory condition, then click Next . The restore process beg[...]

7. Follow the instructions on the screen to complete the installation.  Troubleshooting Software and Hardware Problems If a device is either not detected during the operating system setup or is detected but incorrectly configured, you can use the Hardware Troubleshooter to resolve the incompatibility. Windows XP:  1. Click Start and click Hel[...]