I have a Pentium 3 500 mhz machine and i am wanting to upgrade the motherboard and processor to a pentium 4 2.0 gig. My question is I already have a windows 2000 operating system configured to my 500 mhz. If I do the repair with the windows 2000 cd will it repair the operating system or give me a blue screen system memory dump error. I have already tried this going from a pentium 3 to an athlon XP 2100 and the windows 2000 repairs didn't work. I figured it was probably because I was going from a pentium chipset to an athlon chipset but I'm not sure. Please help!