I have Two Dell Optiplex 755, one is newer condition than the other, both working properly. I took the hard drive from the older Dell and swapped it with the hard drive in the newer Dell, because I want to use the newer Dell. But, when it starts booting up, at the Windows XP splash screen, it reboots and then repeats the cycle in a loop.
Just to check, I swapped the HDDs back again, and both boots up normally. I don't understand why. Both Dells are the same model, with manufactured date within a few months of each other, with the same type of CPU, graphics, RAM, hard drive, etc. Does anyone know how I can fix the looping reboot problem?
Both machines are in AHCI mode.
If the auto-reboot is disable, there is a blue screen error with a cryptic number.