Asus SABERTOOTH 990FX R3.0 - Page 24

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Chapter 1: Product Introduction
Chapter 1
2. MemOK! button
InstallingDIMMsthatarenotcompatiblewiththemotherboardmaycausesystem
bootfailure,andtheDRAM_LEDneartheMemOK!switchlightscontinuously.Press
andholdtheMemOK!buttonuntiltheDRAM_LEDstartsblinkingtobeginautomatic
memorycompatibilitytuningforsuccessfulboot.
• TheMemOK!switch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.
• Duetomemorytuningrequirement,thesystemautomaticallyrebootswheneach
timingsetistested.ReplacetheDIMMswithonesrecommendedintheMemoryQVL
(QualiedVendorsLists)ontheASUSwebsite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!switch
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the
ASUSwebsiteatwww.asus.comafterusingtheMemOK!function.