SEAGATE'S FLAGSHIP desktop Barracuda 7200.11 drives, in particular the 1TB (ST31000340AS) units, are failing at an alarming rate and prompting outrage from their faithful customers.
A new self-bricking feature apparently resides in faulty firmware microcode which will rear its ugly head sometime at boot detection. Essentially the drive will be working as normal for a while, then - out of the blue - it'll brick itself to death. The next time you reboot your computer the drive will simply lock itself up as a failsafe and won't be detected by the BIOS. In other words, there's power, spin-up, but no detection to enable booting.