BIOS(Basic Input and Output System) records hardware parameters of the systemin 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.
Chapter 2 BIOS Setup
• BecauseBIOSashingispotentiallyrisky,ifyoudonotencounterproblemsusingthecurrentversionofBIOS,
itisrecommendedthatyounotashtheBIOS.ToashtheBIOS,doitwithcaution.InadequateBIOSashing
may result in system malfunction.
• Itisrecommendedthatyounotalterthedefaultsettings(unlessyouneedto)topreventsysteminstabilityorother
unexpected results. Inadequately altering the settings may result in system's failure to boot. If this occurs, try to
cleartheCMOSvaluesandresettheboardtodefaultvalues.(Refertothe"LoadOptimizedDefaults"sectionin
thischapterorintroductionsofthebattery/clearCMOSjumperinChapter1forhowtocleartheCMOSvalues.)
2-1 Startup Screen
The following startup Logo screen will appear when the computer boots.
(SampleBIOSVersion:F2a)
Function Keys
• Whenthesystemisnotstableasusual,selecttheLoad Optimized Defaults item to set your system to its defaults.
• The BIOS Setup menus described in this chapter are for reference only and may differ by BIOS version.
There are two different BIOS modes as follows and you can use the <F2> key to switch between the two modes.
The Classic Setup mode provides detailed BIOS settings. You can press the arrow keys on your keyboard to move among
the items and press <Enter> to accept or enter a sub-menu. Or you can use your mouse to select the item you want. Easy
Mode allows users to quickly view their current system information or to make adjustments for optimum performance. In Easy
Mode,youcanuseyourmousetomovethroughcongurationitems.
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