Hello There, my pc specification are: windows xp 32bit, 512mb ram,200gb Hard drive, 1.8Ghz Pentium 4 processor, 512Mb Nvidia 6200. Yesterday my brother had last used the computer, he was using FaceBook and then suddenly the monitor went blank, he could hear sounds of Apps. but could not see anything. What could be the problem? I thought the monitor had the problem but i changed the monitor to an old one still it was blank, i think it could be some windows problem or god knows what, Please help me, Thank you.