28 Quick Reference GuideNo memorymodules are detected.• If two or more memory modules areinstalled, remove the modules(see "Memory" in your User’s Guide),reinstall one module, and then restartthe computer. If the computer startsnormally, continue to install additionalmemory modules (one at a time) untilyou have identified a faulty module orreinstalled all modules without error.• If available, install working memory ofthe same type into your computer(see "Memory" in your User’s Guide).• If the problem persists, contact Dell(see "Contacting Dell" in yourUser’s Guide).System board failurehas occurred.Contact Dell (see "Contacting Dell" inyour User’s Guide).Memory modulesare detected, buta memoryconfiguration orcompatibilityerror exists.• Ensure that no special requirementsfor memory module/connectorplacement exist (see "Memory" inyour User’s Guide).• Ensure that the memory you are usingis supported by your computer(see "Memory" in your User’s Guide).• If the problem persists, contact Dell(see "Contacting Dell" in yourUser’s Guide).A possible systemboard resource and/orhardware failure hasoccurred.• Perform the procedures in "RestoringYour Operating System" in yourUser’s Guide.• If the problem persists, contact Dell(see "Contacting Dell" in yourUser’s Guide).Light Pattern Problem Description Suggested Resolution
