Hello, friend i have a problem with my pc, as my pc was slow process i installed windows xp Sp2, after installation system is rebooting itself for every 20-30 sec, i cheked by using safe mode, it started and runned for 20 mins and then after it again stared rebooting it continued for rebooting for 5 to 6 times and not now it is not starting, can any one help me for my problem. my mother board is biostar and processor is intel core2duo.