Just after I upgraded my BIOS, I enjoyed a constant black screen after the BIOS Screen, which said something like CTRL + ALT + DELETE to reboot. It was no longer detecting something. So I removed the second HD and I was able to boot windows.
During the next boot I did the trick to connect the hard drive to the mobo during the Windows loading screen. And the HD became recognized, I was able to use it normally. In the next boot I left the hard rive connected and it wasn't detected by BIOS or Windows. I tried several cable combinations to see if there's a faulty one but no avail.
The weird part is that this drive does not emit any particular sound and most of faulty drives make noises. Another strange thing is that with the power supply connected the hard drive gets hot, really hot, like it's doing something...
Maybe I should downgrade the BIOS if I can. What do you think?
MOBO: Asrock 4g1m VS3. PSU: 600W generic. Western Digital Caviar Green 1 TB SATA (Like 5 months old)