Well pulling the bios battery will typically reset the password. However, with newer laptops it's becoming increasingly difficult to bypass the bios or accessing data on the drive. All of this due to the new UEFI bios and TMP chips they have built in. UEFI also protects the system from being boot off a USB stick or CD-ROM. There are some tricks though still to bypass and clearing the bios. There are lots of youtube video's going into that area. I have done it myself a couple times, although each system is different and attempting it has it's risks. A 50/50 chance of completely destroying it. It involves a lot of tearing down the system to locate the small chip and then soldering leads to specific chip pins and then tapping them together as the computer boots, thus basically zapping the bios chip and forcing it to reset. The hard drive however will be a paper weight and must be replaced if it can't be formated. A TMP/encrypted drive cannot be formatted, that's the whole point and in turn protecting the drives integrity. The first thing to do is research the make and model of the laptop and your options on how to recover the laptop's lost bios password/data factory reset.
Edited by technonymous, 03 June 2014 - 05:53 AM.