Friday, August 31, 2012

How to enter the BIOS setup - Combination keys

Computer manufacturer's have specific key(s) or key combinations that you have to press when your PC boots up, in order to enter the BIOS setup and alter your system's settings.

This article contains these key(s) or key combinations that let you enter your BIOS Setup Utility, listed with regard to the computer manufacturer and/or the BIOS version you have. Sometimes there are two or more keys or key combinations that will work, while in other cases models from the same manufacturer have different keys assigned for this function.

If you do not get it right from the first time, this might be due to one of the following reasons:
a. You are pressing the right key(s), but you are not pressing them fast enough or long enough.
b. You need to try a different key or key combination, from the other ones for the same computer or BIOS manufacturer.
c. You are using a USB keyboard in an older BIOS which does not support it; try again using a PS/2 keyboard.
d. You have a keyboard with dual-function keys, where you need to press F-Lock in order to have the F keys working. Same possibility might apply in keyboards like these, with other keys as well; e.g. Pause or Insert. Some laptops have an Fn key that works in a way similar to F-Lock. So, before trying a different key combination, please make sure you have your keyboard set correctly for the current one.

I. COMPUTER MANUFACTURERS

Acer - Ctrl+Alt+Esc
Acer - F2
ALR PC - Ctrl+Alt+Esc
ALR PC - F2
AST - Ctrl+Alt+Esc
Compaq - F10 when the cursor is blinking in the upper right corner of the screen
Dell - F1
Dell - Del
Dell - press Reset twice
Dell - Ctrl+Alt+Enter (on older models)
Gateway 2000 - F1
Hewlett Packard - F1
IBM - Hold down both mouse buttons during bootup (on older models)
IBM - F1 (Aptiva)
IBM - Press both mouse buttons repeatedly during bootup (Aptiva)
IBM - Ctrl+Alt+Ins after Ctrl+Alt+Del (PS/2)
IBM - Ins (PS/2 with reference partition)
IBM - Ctrl+Alt+? (some PS/2s, such as 75 and 90)
IBM - Ctrl+Ins when pointer at top right of screen (some PS/2s)
IBM - Ctrl+Alt+Ins when cursor is in upper-right corner of screen (ThinkPad using IBM BIOS - early models)
IBM - Press and hold F1 key while powering-up laptop (ThinkPad using IBM BIOS - later models)
IBM - Ctrl+Alt+F11 from DOS prompt (ThinkPad using Phoenix BIOS)
NEC - F2
NEC - Press and hold F1 key while powering-up laptop (Versa Notebook)
Packard Bell - F1
Packard Bell - F2
Packard Bell] - Ctrl+Alt+S
Sharp - F2 (Laptop 9020)
Sony - F3 while you powering up the PC, then F2 or F1
Tandon - Ctrl+Shift+Esc
Toshiba - Press Esc during boot, then F1
Toshiba - F1 (models using Phoenix BIOS, late model PS/1 Value Point and 330s)
Toshiba - Hold down the left shift key during boot (Notebooks)
Olivetti - Shift+Ctrl+Alt+NumPadDel (PC Pro)
Zenith - Ctrl+Alt+Ins

II. BIOS MANUFACTURERS

AMI BIOS - Del
AMI BIOS - F1
AMI BIOS - F2
Award BIOS - Del
Award BIOS - Ctrl+Alt+Esc
DTK BIOS - Esc
Phoenix BIOS - F1
Phoenix BIOS - F2
Phoenix BIOS - Ctrl+Alt+Esc
Phoenix BIOS - Ctrl+Alt+S
Phoenix BIOS - Ctrl+S
Phoenix BIOS - Ctrl+Alt+Ins

III. GENERIC PC / BIOS

When you don't know any particulars for the computer or BIOS in question, or you don't see it in the lists above, start your attempts from the following key combinations:

Del
F1
F2
F10
Ctrl+Alt+S
Ctrl+Alt+Enter
Ctrl+Alt+Ins
Ctrl+Alt+Esc
Ctrl+Alt+NumPad[+]
Ctrl+Esc