www.biostar.com.tw How to Upgrade BIOS For 8500TAC, 8500TUC, 8500TUR, and 8500TVX + Unzip the downloaded file by typing the file name (it's self-extracted). + Copy BIOS file to A drive & rename it to amiboot.rom. + Turn off computer. + Turn on computer while pressing Ctrl and Home keys. + Release the keys after 3 seconds. + Wait until you hear beeps + Remove the disk. + Computer will re-boot automatically. + Confirm for the BIOS date on the boot-up screen.