single rail for 12V, that's good. CPU is rated at 95W. My guess is this is heat related. Clean the heatsink, make sure the CPU fan is running, clean heatsink and cpu to replace the thermal paste, but without removing the CPU itself since that's not needed. Use a good thermal paste.
So I built my first computer about 2 months ago from now, and it worked perfectly fine for about a month, but around that time it started to randomly freeze when I played league of legends sometimes (what it would do is just lock up my screen without any warning or fps drops leaving me unable to move my mouse or close league and the sound would freeze in place and loop this buzzing noise forcing me to turn it off, sometimes while trying to reboot the computer it also froze during boot up so it would take a few tries)
This wasent too bad at the time and It stopped after lowering my graphics to low settings for awhile (at this point I assumed it was overheating issues), then about 2 weeks later my computer started to just lose display on my monitor randomly ( could happen while i was just idle or watching vids or playing league) and when I lost display although my computer was still on and fans were working none of my outside peripherals worked (hitting caps lock on my keyboard didnt turn on the LED for it, if i was watching a video before losing display there would be no sound etc) at the time this wasn't so bad because it happened rarely, but over the course of about a weeks time it got so bad that it became literally inoperable. Anytime I try to do anything like watching a video or playing a game it always runs fine for a few minutes but then the issue just happens (happens sometimes when im just idling as well). I've done a few things to try and fix it (made sure it wasent a virus by running malwarebytes, factory reset it, bought a new hard drive,) but nothing I have tried works so i was wondering if any of you know what might be causing this to happen
from what I've read online I've heard it's most likely a motherboard or graphics card issue or just straight up overheating but im not sure on what it is exactly so any help on trying to figure out what's causing it would be greatly appreciated and if you need to look at the components here are all the parts I bought for it http://pcpartpicker.com/p/zKrNhM