Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have a laptop but forgot the BIOS password. I cannot go beyond the BIOS password screen and need to continue.

Is there any way I can reset or even remove the BIOS password on my laptop?

share|improve this question
up vote 10 down vote accepted

Plug out all batteries, and the adapter, and remove the RTC battery that supplies power to the CMOS BIOS (according to the service manual p59, it's quite easy).

After about 10 minutes, the BIOS will be reset... along with the password.

To dismantle the dv5, I refer you to the HP dv5 Hardware and Service Manual.

alt text

Actual screenshot from the dv5 Hardware Service Manual.

share|improve this answer
+1 You really like adding pictures to your answers, don't you? :) – alex Sep 15 '09 at 8:38
@alex: what can I say? i'm such a stickler for details. every answer is like a work of art to me. ;) – caliban Sep 15 '09 at 8:41
Thanks Caliban I will try this. – 0xFaCeB00c Sep 15 '09 at 8:43
A good answer is an answer with a picture, I'm not going to say the opposite, I try to do same on most answers – Gnoupi Sep 15 '09 at 8:44
@caliban Your answers are always top-notch so you won't hear any complaining from me – alex Sep 15 '09 at 8:47

You can use a master password, which can be vendor-specific or laptop-specific, in which case this website can be useful.

share|improve this answer

Using Software

IBIOS - is a PC BIOS toolkit offering password removal/decrypt and BIOS settings modification/backup/restore.

CmosPwd - Cmos password recovery tools 4.8

Using Hardware Operations ( from here )

On the motherboard there is a small watch battery. Remove this battery along with the power cable from the power supply. Hold down the power button to fully discharge the system. Wait 2-3 minutes then reinstall the battery and plug in your system. Your reset is now complete


Some motherboards have a 3 pin jumper by the battery. Lets say that the jumper is on pins 2 and 3. Remove the jumper while the machine is OFF and place onto pins 1 and 2. Power on your machine for a minute. (Note: Your system will not POST). Shutdown your machine and put the jumper back to pins 2 and 3. Your reset is now complete

share|improve this answer

Remove the CMOS battery while the power cable is out and the notebook battery is disconnected.

Some BIOS resets allow you to change a jumper setting, but I've never seen that done on a notebook motherboard.

share|improve this answer

The BIOS password should get cleared, if you remove the CMOS battery. For a Laptop the battery placement can be tricky so I'd recommend getting this done by a service engineer if you aren't too comfortable with this.

share|improve this answer

protected by Gnoupi Aug 16 '10 at 7:05

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).

Would you like to answer one of these unanswered questions instead?

Not the answer you're looking for? Browse other questions tagged or ask your own question.