Well chkdsk finished, i've attached a jpeg of it's results, hopefully it maybe of use to you. System is currently stable but then again thats how it goes every time, it'll be stable for a couple of days and then bam it hits again.
Hmmm manual shut downs? Only time I've ever done that is when the system literally hangs on the bluescreen or gets stuck on the windows start screen, it also tends to restart itself a lot on the windows start screen after the first BSOD happens.
Also I've ran all the seatools tests bar the long one, which I'll start soon. All results were clean. If there's anything else you need from me to help out with this just ask away
EDIT: Also if you could suggest some decent brands of PSU, I'd be grateful, I'm holding off of buying one, in case it isn't necessary but been eying up a corsair one for a while, are they a reputable brand?