Home Comp: Get well soon

I still cannot understand how come there are so many nothing-better-to-do-nonsense-rubbish-horrible-people out there, make viruses and trojans to make others suffer? WHY!???? Tell me!!!

Somehow, i also dunnoe how, my home comp caught virus (Win32 Agent or AELUPSVC.DLL). The computer starts to restart out of nowhere. Apparently, this is a POWERFUL one, because it terminate all sorts of antivirus software. Whenever, the antivirus trys to remove it, the comp restart. NO CHANCE at all! access is denied to the root file, and i juz cant remove it. Until finally, a software claims that it can remove it, it is removed, but the comp crashed. somehow, a software problem become a hardware problem. The comp couldnt even reboot. And that means that the only chance of reinstalling window will not work also.

My sick bro, (apparently had passed on his virus to the comp, both of them are sick) try all means to saviour the comp... until this morning, he managed to reinstalled it... but as the chinese saying goes 好景不长在. after all the tedious work of installing back all the drivers and configurations, and seem like everything is gonna be ok~..... lightning struck and thunder road again.... in the midst of downloading Window service pack 2.... the comp restarted again!!!! WHY~~~~!!! why do this to us!? ROAR~

I really have no idea what to do....
and i want to re-emphasize, 无聊 people who creates viruses and malware WILL get their retribution.... someday, somehow, they will pay for all the suffering they caused others. 只是时机未到.