|We suspect almost all people who don't know the laptop hard drive access password either have a stolen hard drive or a stolen computer, or they're trying to access someone else's computer the owner doesn't want anyone who doesn't know the password to access. You don't forget a password you have supply every time you use the hard drive unless you have serious mental problems.|
Even if you know the password, it can only be easily removed on the same computer the password was entered on, or on another computer in a small group of models made by the same maker at about the same time.
The password info is stored on a data area on the hard drive that is not accessible to almost all software.
If the laptop was made in the last ten years or more, the bios chip doesn't have the password info on it - it's stored on another chip that's soldered into the mboard, and the user data contents of that chip cannot be erased by removing the power to the chip. When a hard drive has a password, the info about that is stored both on the hard drive and on that chip. If you change the mboard to one that has no password on that chip for the hard drive, you still won't be able to access the passworded hard drive
Some experts know how to remove the password info from the hard drive, but if that chip has the hard drive password info on it, you still won't be able to access the "unlocked" hard drive, or a new hard drive.
A company in the UK that can remove hard drive passwords from certain laptop hard drives for 49 pounds, or any other laptop hard drive for 149 pounds. The drive must be shipped to them. It appears that the rate does not include shipping charges.
See Response 3