Searched on the subject but no bananas. I helped a friend build a new machine... MB, memory, SATA drives, etc. In that the MB has only one IDE plug, I used it to connect his IDE drive and IDE CD/DVD burner out of the old puter. It is an XP SP2 OS and it starts to start, shows the boot screen, the crawler goes by about 4 times, then... it restarts! and the same thing, over and over. Won't open in Safe Mode and a Boot LiveCD just spins, nothing on the screen even when set to boot from CD except start up. I researched the problem and the ONLY thing that I could discover that coincided with the problem is: When the old machine was an Intel CPU and the new machine is an AMD, the original HDD will not start the OS but no solution listed ;<(. Otherwise, I am at a loss... anything I can try? Don't have the old machine to use, just the new one. Thanks.