mbd

Hi guys, I need ur help its very urgent. I have desktop having congi intel dual core cpu, intel dual core mbd, 512 mb ram, 160 gb sata hdd. One fine day when sw on by pc I noticed my mbd led is on, but smps is off. I have replaced the smps, power cable but by system is still off, may be it is...

guys, i cant install XP sp2 on my pc. it freezes when it reboots while installation when xp progress bar appears. my confg. is : -81845 gv gigabyte mbd. -512 mb(2*256 mb) RAM -2.4ghz p4 processor thnx.............