Pwer on password not working


Well-Known Member
Just purchased an HP probook laptop with 256GB SSD
Was using power on password.
Suddenly I see a message BIOS upgrade in process do not turn off computer.
After it finished, my password no longer works.
It is a 4 digit pin I used for many years other things so I cannot forget it.

I cannot power up the laptop and HP said that it is not under warranty.
How to fix this


Windows Forum Admin
Staff member
Premium Supporter
reset the bios, by removing the cmos battery would be one way.