VAIO VGN Z BIOS password reset

I have a VAIO VGN-Z750D/B and it was in storage for some time but now I have started using it again. The thing is like 4-5 years old and I have forgotten what pasword I put it on so I can't do any BIOS hacks or enter the BIOS. It boots to Windows fine. I still have my original receipt and order number from PC Connection and tried to contact Sony and they said to contact Best Buy and they have no idea what to do either. if I put in wrong password too many times, it gives a red box to put in one time password. Is there a way I can reset it. i am comfortable opening it all up as I have replaced the SSD, and speakers and broken audio board in this thing alonf with faster wi-fi card but this BIOS thing has me stumped. Appreciate any help. Thanks.

 

I assume you have tried it here:
https://us.en.kb.sony.com/app/answers/detail/a_id/41359/related/1

Otherwise you might try your luck at the bios hacker's thread:

http://forum.notebookreview.com/index.php?threads/473226/

Sent from my E6653 using Tapatalk

 

Yes, I tried calling twice hoping to get another representative but seems like they have done away with VAIO support and keep asking me to goto a BestBuy. And I can do the BIOS hacks but there's still no way for me to access the BIOS. thanks.