Took my setup and moved it into my girls machine which had been solid for a long time but was pretty slow. I gave her my memory, mobo, heatsink, and processor. The BSOD comes every now and then. Sometimes not at all. She has a 350W Coolermaster PSU, wireless card, and Nvidia 4200 video card which is teh only thing she is running different from my setup. It will blue screen even when it is clocked back down to an XP2500. I never had a single stabililty problem with this setup. How can I check what it is?