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BIOS(Basic Input and Output System) records hardware parameters ofthe system in the CMOS on the
motherboard.ItsmajorfunctionsincludeconductingthePower-OnSelf-Test(POST)duringsystemstartup,
saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that allows
theusertomodifybasicsystemcongurationsettingsortoactivatecertainsystemfeatures.
Whenthepoweristurnedoff,thebatteryonthemotherboardsuppliesthenecessarypowertotheCMOSto
keepthecongurationvaluesintheCMOS.
To access the BIOS Setup program, press the <Delete> key during the POST when the power is turned on.
To upgrade the BIOS, use either the GIGABYTE Q-Flash or @BIOS utility.
• Q-Flash allows the user to quickly and easily upgrade or back up BIOS without entering the operating system.
• @BIOSisaWindows-basedutilitythatsearchesanddownloadsthelatestversionofBIOSfromtheInternet
and updates the BIOS.
For instructions on using the Q-Flash and @BIOS utilities, refer to Chapter 5, "BIOS Update Utilities."
Chapter 2 BIOS Setup
• BecauseBIOS ashing ispotentiallyrisky,if you donotencounterproblemsusing thecurrent
versionof BIOS,itisrecommendedthatyounotashtheBIOS.ToashtheBIOS, doitwith
caution.InadequateBIOSashingmayresultinsystemmalfunction.
• Itisrecommendedthatyounotalterthedefaultsettings(unlessyouneedto)topreventsystem
instability or other unexpected results. Inadequately altering the settings may result in system's
failure to boot. If this occurs, try to clear the CMOS values and reset the board to default values.
(Refertothe"LoadOptimizedDefaults"sectioninthischapterorintroductionsofthebattery/clear
CMOSjumperinChapter1forhowtocleartheCMOSvalues.)
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