User Guide

1-10
Chapter 1: Product Introduction
Chapter 1
• Refertosection1.1.7 Onboard LEDs fortheexactlocationoftheQLED(DRAM).
• TheDRAMLEDalsolightsupwhentheDIMMisnotproperlyinstalled.Turnoffthe
systemandreinstalltheDIMMbeforeusingtheMemOK!function.
• TheMemOK!buttondoesnotfunctionunderWindows
®
OSenvironment.
• Duringthetuningprocess,thesystemloadsandtestsfailsafememorysettings.It
takesabout30secondsforthesystemtotestonesetoffailsafesettings.Ifthetest
fails,thesystemrebootsandtestthenextsetoffailsafesettings.Theblinkingspeed
oftheDRAMLEDincreases,indicatingdifferenttestprocesses.
• Duetomemorytuningrequirement,thesystemautomaticallyrebootswheneach
timingsetistested.IftheinstalledDIMMsstillfailtobootafterthewholetuning
process,theDRAMLEDlightscontinuously.ReplacetheDIMMswithones
recommendedintheMemoryQVL(QualiedVendorsLists)atwww.asus.com.
• IfyouturnoffthecomputerandreplaceDIMMsduringthetuningprocess,thesystem
continuesmemorytuningafterturningonthecomputer.Tostopmemorytuning,turn
offthecomputerandunplugthepowercordforabout5–10seconds.
• IfyoursystemfailstobootupduetoBIOSoverclocking,presstheMemOK!button
tobootandloadtheBIOSdefaultsettings.AmessagewillappearduringPOST
remindingyouthattheBIOShasbeenrestoredtoitsdefaultsettings.
• WerecommendthatyoudownloadandupdatetothelatestBIOSversionfrom

www.asus.comafterusingtheMemOK!function.
3. MemOK! button (MemOK!)
InstallingDIMMsthatarenotcompatiblewiththemotherboardmaycausesystemboot
failure,andtheDRAMLEDlightscontinuously.PressandholdtheMemOK!button
untiltheDRAMLEDstartsblinkingtobeginautomaticmemorycompatibilitytuningfor
successfulboot.