Seems to be corruption between your password input to the bios and what the bios recognises. This is why I NEVER use a bios password. You could try resetting the CMOS by moving the jumper which should be somewhere near the computer battery. Your Motherboard manual should indicate where this jumper is and how to do it. Its just a matter of seconds that you have to do this for a reset. As to whether this will clear the password data I do not know. I have never had to do this. Remember - No password - No problem.