As I've mentioned in some earlier threads, I was having issues with my 1 TB Hitachi 7200 rpm drive that mostly (but didn't completely) went away once I turned off the Page file. At no time did any disk checking program show a problem with the drive, but the fact that it would occasionally go into 100% spin with no actual reads or writes going on would freeze my system for a minute or more.
Last night I finally replaced it with a Sata III Crucial 128 Gig SSD. Moved my Windows Experience score up as the HD even originally was only 5.9 and the SSD is at 8.1
So now I have, as far as I can tell, a perfectly good 1TB drive just sitting here. I really don't want to toss it out, but I'd feel bad about selling it given I'm not sure if there is an issue or not. On the other hand I wouldn't really want to use it for anything I couldn't afford to lose either, and the system already has an external 4TB USB2 and a 1TB USB3 drive so I'm not really hurting for storage either.