Acer - Aspire, Power, Veriton, Extensa, Ferrari, TravelMate, Altos

Press Del or F2 immediately after powering on.
The BIOS on the Acer Altos 600 server uses the Ctrl+Alt+Esc key and the F1 key for advanced options.
Older Acer computers may use also use the F1 or Ctrl+Alt+Esc keys to access BIOS.