I have upgraded one of the computers at home by installing a new motherboard, cpu, and memory: ASUS M2A-VM, Athlon 64 X2 3800, 2x512 DDR2. (Old system was Pentium 4 2.66) Currently, the hard drive will not run with the new hardware (i.e. windows does not load), so I am trying to reinstall (repair) windows, hoping it will work. I've already updated the BIOS. Now, to specify the exact stage at which I am experiencing a problem: Right after the XP installation files are copied on the HD, the computer restarts and then the actual installation should begin. However, my PC only gets so far as the windows loading screen (dont know if it should be doing this) and then after a few secs it restarts without initiating the installation, and it does this repeatedly - rebooting without any installation. I was also stupid enough to do this without backing up hard drive files; so I really need to have this windows repair work, otherwise, Id probably need to format - dont wanna do that. So far, I also know it's not a RAM problem since I had that checked. Anything I can do? Thanks in advance for any help.