GeForce 8800 GT Problems

I have a Vista Home Premium 32bit, I also have a GeForce 8800 GT. For four years that I've had both computer and card, everything has been great. However last Thursday the video card decide to stop working. I have already updated the driver, and cleaned out the registry. The best that has gotten me was five vertical bars of static. My computer is a HP Pavilion a6142n. Any solutions?

My video card driver is up to date, I've tried uninstalling everything and then reinstalling everything. the default graphic card is disabled. I don't know what else to do, beside update the Bios.

Well I updated my BIOS from HP's website, and that didn't help.