Stedy wrote:
Do they have a FLASH/EEPROM on a HDD?
Some drives have upgradable firmware, best bet is to visit the drive manufacturers website and see if they have any diagnostic tools you can download.
But, that does mean getting the PC to boot up with the drive installed first :-(
I know some older 2.5" drives liked to be the only device on the cable, maybe try putting it as the only one on the secondary port?
Can you get into the BIOS with the drive plugged in to do a redetect?