Laptop blank screen.

Hello,

My laptop has been suffering a lot of issues. It started back on Patch Tuesday on Tuesday, April 10th 2012. During the BIOS update, the laptop shutdown. I wondered about the problem, and when I tried to turn it back on, nothing. I came here, and found one of the first answers. I did the 60 second power switch fix, and it worked...for that night. I tried it everyday, and I had to do it everyday until two days ago. Now it won't power on no matter what I do. I've tried everything. I held it upside down for 30 seconds, held it down for 2 minutes, even 7 once. I also took it to the Geek Squad at Best Buy and they said that I needed a motherboard fix which was out of my pocket. And last night, my wife kept the power plugged in, so I'm not sure if there is more residual charge and I would have to hold it down for longer now.
Specs: Toshiba Satellite L655D-S5093
Windows 7
BIOS version 2.10

Thanks