.NET Framework woes

I don't know if anybody else has faced his problem while using MS .NET Framework on WinXP with SP1a as I did. When I installed Framework(it was required for some newsreader), after few minute with every movement of mouse click screen would go blank and windows would hang. But when I restart my PC with reset there would be no error or disk checking as expected from xp. So ultimately i had to reinstall my OS as even after uninstalling problem w'nt go away.
So is there any solution to this problem ?

After u reinstall ur windows, try to patch your windows with da latest patch.. such as SP2 R2.. i think it will work as SP1 alpha is so vulneralble.. :D