So far so good on my end. I decreased the temps a little by moving some fans around (now running ~37ish) with clocks at 280 and so far running solid at 33.6GH/s. No signs of a memory leak yet, but I'll keep my eye out. Sorry your having issues with your PC Philip, but it sounds like CrazyGuy is working on some updates.
I think you may have solved your issue 37 c vould be the cure.
I may have figured out this pc issue.
I set no windows 7 updates since I don't want the updates to interfere with mining and this pc only mines.
The last 3 times it crashed even with the no windows updates within 2 hours after the crash it does a windows update. So I am thinking my no updates choice gets over ridden by microsoft.
Does not happen much every 20-40 days. I thought it was an aging mobo but I think not. This would be good news since this pc has mined so long and so hard and so well I do not ever want to lose the mobo. Asrock z77 -itx-e with an intel i7 3770t low power quad cpu.