computer help

Sounds like the screen took a crap. It's also possible that the ground strap on the screen may have got loose or the ribbon cable that connects the screen to the motherboard worked its way loose.

Unfortunately, laptops don't have replaceable video cards, they use a onboard chip. You can check for the above issues but taking laptops apart is a lesson in patience. See if you can find some disassembly instructions on the 'net.