Hi,
During my research in hope to retrieve my data from a faulty hard drive I found this interesting forum and I'm happy to join the community
I also have issues with a Samsung HM321HI drive, which is not working anymore. When I connected it to my PC over SATA, it wasn't recognized in BIOS at all and also the motor wasn't running (no noises at all). As some contacts on the board looked oxidated, I decided to buy a new PCB with the same revision and board number and replaced it with the original PCB. When I connect the hard drive now, I hear the motor spinning but still the hard drive is not recognized in BIOS. Also I tried it with a SATA/USB adapter (ASMT 2105) and shortly after plugging it to my USB port, I see it for about 10 seconds in the device manager, before it disappears again.
To me it looks like some kind of check in the beginning seems to be failing and therefore the hard drive is not starting properly (maybe firmware is different between those boards). Therefore I wanted to ask, if this a clear indication that I should swap the ROM or if there's any other possibility which I could try to analyze this behaviour (some analysis tool to read some diagnostic data etc.).
Thank you in advance