So, brute force approach says that you have to take out CMOS battery and wait for 12 hours. But disassembling laptop takes time and imposes unnecessary liability. So, after trying list of default back-door passwords , time came to either declare defeat or use Google for another 15 minutes :)
In result, please consider dogber1.blogspot.ca  and its Web UI .
BIOS in question was showing check-sum after third invalid password:
Dogber1 provides .py script  to be run on your box, or you can try your luck with online tool :
Question that is left unanswered - if I was able to enter the system in 15 minutes... how much time it takes for gentlemen doing that for living?
 List of known back-door BIOS passwords
 BIOS reset password solution
 Web UI for dogber1 generator