08-03-2013 06:50 AM
Unfortunately, there are no 'backdoor' or default bios passwords for Elitebooks - you can either contact HP regarding this on the link below.
Alternatively, if you or someone you know has soldering skills, you can replace the bios chip - an example of the chip you require is on the following link.
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Microsoft MVP - Microsoft Windows Expert - Consumer
08-05-2013 08:58 AM
This should help.
This is your BIOS chip.
I must inform you that these services are not endorsed by HP, and that HP is not responsible for any damage that may arise to your system by using these services. Please be aware that you do this at your own risk.
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Microsoft Registered Refurbisher