BIOS (Basic Input and Output System) records hardware parameters of the system in the CMOS on the
motherboard. Its major functions include conducting the Power-On Self-Test (POST) during system startup,
saving system parameters and loading operating system, etc. BIOS includes a BIOS Setup program that allows
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.
• @BIOSisaWindows-basedutilitythatsearchesanddownloadsthelatestversionofBIOSfromtheInternet
and updates the BIOS.
Chapter 2 BIOS Setup
• BecauseBIOSashingispotentiallyrisky,ifyoudonotencounterproblemsusingthecurrentversionofBIOS,
itisrecommendedthatyounotashtheBIOS.ToashtheBIOS,doitwithcaution.InadequateBIOSashing
may result in system malfunction.
• It is recommended that you not alter the default settings (unless you need to) to prevent system instability or other
unexpected results. Inadequately altering the settings may result in system's failure to boot. If this occurs, try to
cleartheCMOSvaluesandresettheboardtodefaultvalues.(Refertothe"LoadOptimizedDefaults"sectionin
this chapter or introductions of the battery/clear CMOS jumper in Chapter 1 for how to clear the CMOS values.)
2-1 Main
Once you enter the BIOS Setup program, the Main Menu (as shown below) appears on the screen. Use
arrowkeystomoveamongtheitemsandpress<Enter>toacceptorenterasub-menu.
Main Menu Help
The on-screen description of a highlighted setup option is displayed on the bottom line of the Main Menu.
Submenu
Help
Whileinasubmenu,press<F1>todisplayahelpscreen(GeneralHelp)offunctionkeysavailableforthemenu.
Press<Esc>toexitthehelpscreen.HelpforeachitemisintheItemHelpblockontherightsideofthesubmenu.
(Sample BIOS Version: T2)
• Whenthesystemisnotstableasusual,selecttheRestore 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.
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