Aqui está a lista de possíveis chaves:
AMI (American Megatrends) - AMIBIOS, AMI BIOS
Press Del when after powering on the computer. Some older motherboards that use AMIBIOS may prompt for the F1 or F2 key instead.
AwardBIOS, Award BIOS
Press the Del key to enter the BIOS Setup Utility on nearly all AwardBIOS powered motherboards. Some older systems using Award's BIOS software asked for Ctrl+Alt+Esc to enter BIOS.
DTK BIOS
Press the Esc key to enter BIOS, right after powering on the PC. Microid Research -
MR BIOS
Press F1 to access the BIOS setup utility.
Phoenix-Award BIOS
Press Del during the Power On Self Test, immediately after the computer starts. Many older Phoenix BIOS systems required Ctrl+Alt+Esc, Ctrl+Alt+Ins, or Ctrl+Alt+S to access BIOS. If you're still having troubles entering BIOS or can't figure out what company supplied the BIOS on your motherboard, here are some keyboard commands you might want to randomly try in addition to the any of the ones listed above:
F3 F4 F10 F12 Tab Ctrl+Alt+F3 Ctrl+Alt+Del Ctrl+Alt+Shift+Del (using Del from the keypad) Ctrl+Insert Ctrl+Shift+Esc Fn+[any "F" function key] (on some laptops)
Verifique se o BIOS reage ao seu teclado se você tiver um teclado USB. Se não reagir a USB você não tem suporte USB ativado no BIOS e você terá que conectar o teclado PS2
Para ativar o suporte de BIOS para dispositivos USB, siga este tutorial .