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BIOS(BasicInputandOutputSystem) records hardware parameters of the system intheCMOSonthe
motherboard.ItsmajorfunctionsincludeconductingthePower-OnSelf-Test(POST)duringsystemstartup,
savingsystemparametersandloadingoperatingsystem,etc.BIOSincludesaBIOSSetupprogramthatallows
theusertomodifybasicsystemcongurationsettingsortoactivatecertainsystemfeatures.
Whenthepoweristurnedoff,thebatteryonthemotherboardsuppliesthenecessarypowertotheCMOSto
keepthecongurationvaluesintheCMOS.
ToaccesstheBIOSSetupprogram,pressthe<Delete>keyduringthePOSTwhenthepoweristurnedon.
ToupgradetheBIOS,useeithertheGIGABYTEQ-Flashor@BIOSutility.
• Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.
• @BIOS is a Windows-based utility that searches and downloads the latest version of BIOS from the Internet
and updates the BIOS.
ForinstructionsonusingtheQ-Flashand@BIOSutilities,refertoChapter5,"BIOSUpdateUtilities."
Chapter 2 BIOS Setup
• BecauseBIOS ashingis potentiallyrisky,if youdonotencounterproblemsusingthecurrent
versionofBIOS,itisrecommendedthatyounotashthe BIOS.ToashtheBIOS, doitwith
caution.InadequateBIOSashingmayresultinsystemmalfunction.
• Itisrecommendedthatyounotalterthedefaultsettings(unlessyouneedto)topreventsystem
instability or other unexpected results. Inadequately altering the settings may result in system's
failuretoboot.Ifthisoccurs,trytocleartheCMOSvaluesandresettheboardtodefaultvalues.
(Refertothe"LoadOptimizedDefaults"sectioninthischapterorintroductionsofthebattery/clear
CMOSjumperinChapter1forhowtocleartheCMOSvalues.)