Hi Adel,
I am afraid there is no way still to retrieve BIOS password but you may want to contact HP Support to check if they have ways to check that for you. Usually for the case you have it is replace MOBO already. Please check the number on the link below base on your location.
Contact HP Phone Assist HP Official Site
SOURCE: HP Compaq nc6320 PC bios password
Ok, as long as the high security level has not been set in the bios then the following will work to reset / disable the bios password.
1. Remove the battery and mains adapter.
2. Remove the memory cover on the back of the laptop and remove the 2 keyboard screws.
3. Open the laptop and at the top of the keyboard you will see 4 sliding tabs. They are located between the 'Esc & F1 keys' 'F4 & F5 keys' 'F8 & F9 keys' and 'F12 & delete keys'. Slide these down and lift the keyboard up and pull forward slightly so as to disengauge the bottom lugs. Be carefull as there is a ribbon cable at the bottom that does not need to be tugged or removed.
4. You will now see at the bottom behind the keyboard a small battery connected to the motherboard. Gently pull the small white plug upwards untill it is removed from the board.
5. Wait 5 minutes and re-connect the small battery plug.
6. Re-install the keyboard and push back the clips. You do not need to replace the screws yet.
7. Apply the DC jack and power on - DO NOT INSTALL THE MAIN BATTERY.
8. Turn the laptop on while pressing f10 repeatedly but slowly - Do not hold it.
9. If high security is disabled you should now be in the setup screen, select 'Restore Defaults' and press F10 to save.
10. The password is now removed.
If this does not work then HP say that there is no other way to reset it. Im not sure about that, there probably is by some method of de-soldering the bios chip. However the above method worked for me so I hope it does for you. Please rate if you have any luck.
Sparkyuiop.
SOURCE: I Forget the BIOS setup password
When you start your computer, tap F2 key to enter the BIOS setup. In the security menu is the area for removing/resetting BIOS password.
SOURCE: removing bios password on Compaq NX6120
http://www.tech-faq.com/reset-bios-password.shtml see on this site or you can also google for it
SOURCE: how can i remove bios password fro hp 6735s
You won't be able to do it yourself. You'll have to contact an authorized HP support center.
There used to be "easy" ways but now the password is stored on a chip on the motherboard.
SOURCE: how can i reset CMOS/BIOS password for HP compaq tc4400 laptop
how can i reset CMOS/BIOS password for HP compaq tc4400 laptop i have hp 500 notebook and i forget cmos/bios password . i remove cmos battery . but dont solve it . how can i solve it
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