Just came home to a BSOD

I got a new heatsink the other day so i decided to overclock my P4 from 2.8 to 3.6, temps were really good never getting above 37 Celsius. One time when i came home I had the lovely BSOD didn't think much of it, well when i came home tonight and saw it I thought i better back the overclock down some and see if anyone had any idea what this could be. My graphics card is getting the power it needs, i have a new PSU that's been doing its job really well rails don't fluctuate much at all. The BSOD said something about a Win32k.sys driver I don't know is it has something to do with windows because i have windows 2k pro on here and windows xp, so I'm really not sure whats going on. Any help is greatly appreciated.

I doubt that it would be caused by a new heatsink (unless something was damaged during installation). A repair install of XP could help, assuming that was the one running when it BSODed. It could be virus related, or maybe even bad RAM (memtest would be a good idea just to see). Otherwise, just back up all your important stuff and format your OS partitions and reinstall the OSs.

I would just clock it down a little. 2.8 to 3.6 is a pretty good overclock, your probably getting the BSOD because your system isn't stable.

Yes XP was the one running when it happened. I will run memtest today and let you know how it goes. I did clock it down alittle, but i ran prime 95 for 9 hours and it said that nothing was wrong, that was at 3.6, I have it at 3.3 right now just in case it was the overclock.