The Bios recognizes the drive and everything else, Windows start running, the XP logo over the black screen appears the green dots begin to pass and suddenly the computer restarts itself... and again and again, even in safe mode or any other mode.
I thought i was lost all my data but... if I connect back the old parts the disc works perfectly.
Now I don't know what to do.
P.D. The old Motherboard was an Asus with Athlon with Kingston Ram, the new ones are Asus, Phenom and Kingston. The HD is a Seagate Barracuda 7200.10 250gb.