I have a Patriot Torqx 128GB SSD. After shutting down and powering on, I got a Win7 error message saying the boot loader is missing or corrupted. I decided to just reinstall 7, but the installer saw the SSD capacity as 0 bytes. Ubuntu's LiveCD doesn't see the SSD at all.

The cables are firmly connected; I never touch them. I have AHCI enabled in my BIOS, as I always have. Again, this is a sudden occurrence; I changed nothing relevant. Is my SSD dead?