This build is less than a year old:
CPU: Intel Core i5-3570K Ivy Bridge 3.4GHz
Mobo: Asus P8Z77-V PRO
GPU: EVGA GeForce GTX 680 2GB
RAM: 4x4GB G.Skill Ripjaws DDR3 1600
SSD: Intel 520 Series 250GB SSD
PSU: Corsair Enthusiast Series TX750M 750W
A couple months ago I started having a problem where my every day use was normal, but after returning to my computer the monitors would not resume from standby. The computer was still running, and as far as I could tell, all of my programs were still working in the background. This problem continues to occur, although not as much lately. I'm not sure if it's related to the main problem I'm now having, which is:
My computer locks up. It starts with one program, where others are still usable. Sometimes it starts working after about 30 seconds - still very annoying. Other times it progresses and all programs lock up - and then they all start working after 30 seconds (and everything I had clicked during the lock up goes into action). Now more frequently, it locks up, starting with one program, then moving to them all, then my mouse freezes, and it never comes back (and I have to reboot). After a reboot, this often happens within the first 5 minutes of use, so I end up in a constant reboot/use for a few minutes cycle until it magically works - and then it can go for days without issue.
My first thought was an issue with my PSU, but now I'm not so sure. Ideas?