how restore te bios video card?

my screen is black when i turn on the computer the video card doesn't work i think is the bios because the fan is ok how i can restore te bios is a pixelview 5600 chip nvidia 256 mg?

As far as I know you cannot modify a video card BIOS and I am not sure they even have a BIOS.

Now you can modify your system bios. Usually pressing F2 or the delete key as the system boots up will get you into the BIOS screen.

is your screen black even on post? or is it just when windows loads the drivers?

if your video card isnt working then most likely theres a problem with the card. it doesnt really matter if the fan is going or not. they can still fry out even with the fan going. and no. they do not have bios. your system bios can usually be reached by pressing f1 or delete. on some systems its f2. however, if your video card is out.. that doesnt help much. lol