ey guys i need help with my computer. my problem is that after the bios checks the disk for errors, the screen scrambles then it shuts off afterwards. when i'm lucky, i get to use it for quite some time but sometimes it just hangs and turns off then turns on again. i tried ugrading the driver for the video card but it still has the same problems.sometimes when it turns back on it says that the video card failed a drawing operation of some sort. and sometimes while playing video games, it the computer would hang and text in blue background would say n4___.dll will start dumping of physiacl memory. couldn't find out what else is written cause everythings so quick.

here are the specs of my computer:

OS: Windows XP
Motherboard: ASRock K7VT2 chipset kt226a

i would be grateful ifanyone could help me.tnx.