Test your ram to see if there are any errors on it.
I recently had a similar problem, my hard drive had inconsistency too, one day it got so bad my computer wouldn't even boot into windows properly. I thought my hard drive was to blame. But after trying to fix the problem I found out that one of my stick of ram went bad.
After installing a new pair of ram, all the problems went away...no more problems with the hard drive too.