The Rules prohibit us from assisting in bypassing passwords. Please read the
Rules
However you can try this:
Look on the motherboard (the main circuit board everything is plugged into) for the battery. It looks like a large watch battery (CR2032), about the size of a nickel.
Once you find it, study it to figure out how to disengage the clip that holds it in. Don't force it and break it.
Once you have it unclipped, study it again so you'll know which side goes up when you put it back.
Leave the battery out for a while....sometimes 10 minutes works, sometimes it requires an hour or more...to drain the BIOS memory...and the password along with it.
Replace the battery, engage the clip, plug the computer in and start it up. You make get a checksum error but don't worry about. Just set the BIOS to default values and see if that sorts things out.