I have built a new machine with an ABIT NF7-SG motherboard and AMD Sempron 2800+. I installed the HD from the old machine and now it will not boot into windows. Initially, I got not video at all, but after clearing the CMOS, per the manual, I got video. The POST works,but it resets and starts again continuously. If I go into BIOS and try to set ANYTHING and save the settings, then I get the black screen and am back to square one. Am I going to have to format and reinstall the OS?? If so, how to do it? I suppose I should set up the BIOS to boot from CD and reinstall XP like I have done with other machines. I am really puzzled here. Thanks in advance.