|The password in a hard drive is stored in a chip. Not even the manufacturer can help as there is no backdoor password that I know of. Nor is there any software to crack it.|
To add to this nightmare, some laptops will make even a new hard drive password protected thus creating not 1 but 2 paper weights. That info is stored in the eeprom.and the pw is created at post. Bummer!
You can try a new hd or get a program like hdd unlock. It will not get the password but will format it and make it usable.....Be aware it is not guaranteed to work 100% of the time as it can make a hd toast.
As stated above....the previous owner if known is the best answer.