A few months ago I bought two Seagate Barracuda 7200.11 hard drives. Twins. A few days after booting the PC, one of the HDD stopped working. Was not recognized by BIOS, and of course, nor for Windows. That HDD is recovered through this site. The other worked well. Update the firmware of the two, and all correct. For added security, I used "SeaTools software" - Seagate diagnostic software, in both HDD. Conclusion: The hard drive recovered (Was not recognized by BIOS): Without errors. The other: Diagnosis = Multiple bad sectors. With "software HDD Regenerator", issue resolved. But ... Now the two HDD in the trash. Are not of my faith. Right, data safe.