I've had two OCZ Octane 2's die, both the same way, clean shutdowns, no hibernation, booted one morning and "CHKDSK needs to run", takes about 15-20 minutes, finding lots of orphan files, reboots, "CHKDSK needs to run", same deal again, repeat about 4-5 more times and if windows did boot, it was pretty much corrupted, system files missing, applications failing to load.
And because I bought them from a "non-OCZ approved reseller" they're apparently not covered on warranty.
Smashed them with a hammer, bought a Samsung 830 series, hasn't skipped a beat yet.