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Possible Duplicate:
Reset or remove the BIOS password on my laptop

I have a Dell D620 laptop. My younger brother set password by mistake on BIOS Setup and forgot it. How do I reset the BIOS Setup program so that password can be reset? Any other alternative is appreciated as well.

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marked as duplicate by random Aug 14 '10 at 4:36

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I updated my answer with additional information – Nifle Mar 25 '10 at 11:23
comment by Kraven: Isn't there any sort of jumper on the laptops motherboard to reset the password? – quack quixote May 7 '10 at 4:46
comment by saleemrehman: No, dear kraven. There is not any jumper. I asked laptop repairing shops and they said this is only one way to change BIOS IC. So if you can then do it. – quack quixote May 7 '10 at 4:46

You'll probably have to remove the CMOS battery on the motherboard. That will reset the BIOS to factory default and remove the password.

Update: (since this does not work on this particular model)
From WikiAnswers regarding Dell D620

There IS a master password unique to your laptop. If you acquired it honestly and are the current owner, you can call Dell and provide them some information (Name, address, phone, serial number, BIOS rev, etc) and they can give you the master password based off of that.

The catch is they'll only do it if it's under warranty. If it's not under warranty, you'll probably have to pay (I think between $75-150 USD).

You can try a BIOS flash utility, such as one that updates your bios, but it usually requires you enter the BIOS password first.

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Though this can be difficult on some laptops. – Josh K Mar 21 '10 at 18:39
Won't work on any laptop with a TPM, though, as the password isn't stored in volatile memory. ThinkPads for example are quite impossible to de-passwordize without replacing the mainboard. – Joey Mar 21 '10 at 19:37
removing battery procedure doesn't work at all I have already tried it !! – Mr-Right Mar 24 '10 at 11:37
@Johannes - This is possible one of the stupidest design errors I have heard about. – Nifle Mar 25 '10 at 11:15
@Nifle: You don't set a password if you're likely to forget it. You set it to prevent others of accessing your computer. It's not particularly effective if removing a screw and a battery disables it. – Joey Mar 25 '10 at 12:56

It's a little old but CmosPwd might be of help.

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