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I was using desktop running on a 64 bit Windows 7 professional, I trying to enter BIOS to check the virtualization setting, when I boot or restart my desktop, before enter Windows, I don't see any screen or instruction to entering BIOS.

I wonder is it I didn't install BIOS on the machine or? How can I check whether BIOS exist or it is come together upon installing mother board driver? Please advise.

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The BIOS isn't something you install, it's stored in a ROM chip on the motherboard. A machine without a BIOS cannot boot. –  Wyzard Nov 1 '11 at 6:43
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Agree, but why xe? –  Dehumanizer Nov 1 '11 at 8:32
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@Dehumanizer because it is not readily obvious whether the OP is male or female. I don’t know much about Malay names, but in English at least, Sam(s?) could be either. Perhaps a more obvious placeholder (at least for computer aficionados) would be *he or .*he. –  Synetech Jun 24 '12 at 20:50
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> A machine without a BIOS cannot boot @Wyzard, it could have an EFI. –  Synetech Jun 24 '12 at 20:52
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@Synetech, people often call it "the BIOS" even when it's actually EFI. I tend to use the more general term "firmware", but I still say "BIOS" sometimes when the distinction isn't important. –  Wyzard Jun 25 '12 at 3:36
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3 Answers

up vote 7 down vote accepted

Every computer motherboard has BIOS installed on it, but it may be hard to see what key you need to press to enter the BIOS itself.

Traditionally, the Del, Esc, or one of the function keys (F1-F12) are designated to take you into the BIOS.

If you know the motherboard model you can also check the documentation on the manufacturer's web site.

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If it s a name brand board, you can look on the board for the manufacture and the model number, then go online and get the manual. Otherwise, if all else fails, or if it is a HP/DELL/etc, check the motherboard and look for a jumper. It usually has the word CMOS next to it. Changing the jumper to the other pins for a minute, then changing it back, should reset the bios so it will display the default boot screen which will tell you what key to press to get into the bios. Usually if a machine doesn't display anything and immediately boots Windows, then the options to display the boot messages is turned off. On newer Intel boards, setting the features for quick boot requires resetting the jumper in order to get the bios key to register.

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You could try to make the BIOS generate an error condition:

  1. Just hold down several keys on the keyboard, this will slow down the first screen and might error.

  2. Disconnect the keyboard or mouse, some BIOS are configured by default to give a warning.

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