I've had the same problem twice, both times after the system crashed for no apparent reason. The first time i tried to reboot several times, but only the next day the computer came back to normal. Before turning it on I made sure the sata cables were firmly connected, but being the computer turned off for several hours seemed more to be the solution.
The second time, after trying the above without success, i went to the setup and disabled the option "cool&quiet", which didn't solve the problem. I still left it that way, cause i read somewhere it slowed the cpu down significantly. Then, I enabled "enable writing block protection" (or something like that), rebooted, and it worked. So far, the Windows crashes also stopped.