could you please tell me the make and model of your hard drive? and in the meantime try running a diagnostic on the drive either with seatool or WD data lifegaurd.
It's a WD Red 1TB... I forget the model, let me look that up here...
Western Digital Red WD10EFRX 1TB IntelliPower 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive
There you go. And as for the diagnostic test, I can't do anything right now, I'm at a friends house forgetting about it for awhile.
I'll revisit soon when I get back home.