Decode a Laptop BIOS Password Using a Simple Checksum Script

Whether you bought it on eBay and it came pre-locked or you set your BIOS password so long ago you can't remember it, for most laptop manufacturers resetting your BIOS password is as easy as decoding the checksum error code. The photograph above is a snapshot of a laptop BIOS error screen. On most laptops you get an error to the effect of "System Disabled" or a variation, and a checksum error.