Download Enter BIOS or CMOS Setup on Computer – Most modern computers will require you to press one of the following keys during start up: F1, F2, DEL, ESC, F10, You should press the key when you see a message such as press to enter BIOS or try tapping the appropriate key slowly during startup. On some modern computers, pressing and holding down a key during boot will cause a stuck key error. This may give you the option to enter BIOS setup. Older computers may require one of the following key sequences during startup: CTRL + ALT + ESC, CTRL + ALT + INS, CTRL + ALT + ENTER, CTRL + ALT + S, PAGE UP KEY, PAGE DOWN KEY, If the above suggestions do not work please check the access key lists below. List of BIOS access keys for major computer manufacturers. 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.