5-2 Using BIOS Setup and System RecoveryBIOS SetupWhen and How to UseYou need to run BIOS Setup Utility when:z You see an error message on the screen requesting you to run BIOSSetup Utility.z You want to restore the factory default BIOS settings.z You want to modify some specific settings according to the hardware .z You want to modify some specific settings to optimize the systemperformance.To run BIOS Setup Utility, press the F2 key when the prompt appears on thescreen during system startup. The prompt shows up on the screen for only afew seconds. You must press F2 quickly. The BIOS Setup Utility main screenappears as shown next.Information Main Advanced Security Boot ExitModel NO:Serial NO:Processor Info:Installed System Memory:SATA HDD:SATA ODD:BIOS Revision:EC Revision:LAN MAC Address:IEEE 1394 GUID:Operating Time:S400RA7XXS0019Intel(R) Core(TM) i5 CPU M520@2.40GHz4096MB[SAMSUNG HM321HI] 320GB[Optiarc DVD RW AD-7580S]R0.90.070520AR0.90b00-22-20-0A-D1-BA00-40-D0-01-00-48-27-81295 HoursF1 Help ↑↓ Select Item -/+ Change Values F9 Setup DefaultsEsc Exit ←→ Select Menu Enter Select X Sub-Menu F10 Save and Exit