|Usually once you reset the BIOS you should be able to reformat the drive and Install Windows.|
To reset the BIOS password you can find the Flash jumper under the keyboard depending on the model.
YOU DO NOT HAVE TO TEAR THE HOLE THING APART LIKE THE GUY IN THE VIDEO DID BUT IT GIVES YOU A GOOD PICTURE OF WHAT YOU ARE LOOKING FOR.
Here is another video without tearing the hole thing apart.
Note: The Drive will be Encrypted still so you will need to get a Windows Disk to reformat and reinstall.