46 Troubleshooting Toolsw w w . d e l l . c o m | s u p p o r t . d e l l . c o mA possible graphics card failure hasoccurred.• If the computer has a graphics card,remove the card (see page 68), reinstallit, and then restart the computer.• If the problem still exists, install agraphics card that you know works andrestart the computer.• If the problem persists, contact Dell(see page 119).A possible floppy drive or hard drivefailure has occurred.Reseat all power and data cables andrestart the computer.A possible USB failure has occurred. Reinstall all USB devices, check cableconnections, and then restart thecomputer.No memory modules are detected. • If you have two or more memorymodules installed, remove themodules, reinstall one module (seepage 66), and then restart thecomputer. If the computer startsnormally, reinstall an additionalmodule. Continue until you haveidentified a faulty module orreinstalled all modules without error.• If available, install properly workingmemory of the same type into yourcomputer (see page 66).• If the problem persists, contact Dell(see page 119).Memory modules are detected, but amemory configuration or compatibilityerror exists.• Ensure that no special memorymodule/memory connector placementrequirements exist (see page 64).• Verify that the memory modules thatyou are installing are compatible withyour computer (see page 64).• If the problem persists, contact Dell(see page 119).Light Pattern Problem Description Suggested Resolution
