Hey. I've been trying, for the last year, to fix my "new" gaming pc. The specs are the following: CPU: AMD FX 6350 Cooler: Noctua NH-U12S Ram: Kingstone 8gb ddr3 HyperX Blu GPU: MSI Nvidia GTX 760 HAWK Motherboard: Asus M5A97 R2.0 HDD: Western Digital WD10EZEX 1TB & Samsung SSD 850 EVO PSU: Cooler Master RS-600-ACAB-M2 ATX 600W OS: Windows 8.1 The pc is like super fast 'n stuff (I code a lot, and it's really good for that kind of stuff), but there's a very big problem: if I ever try to play a stupid game for more than 5 minutes (es. Transistor, I want to finish that game so bad) it shuts down without any notice. That problem also occurs while browsing the web or doing something CPU intensive. Yesterday I installed the new cooler (the noctua that I stated up in the thread) and threw away the old-stock one. The temperature inside is a bit cooler, but the problem persists. I tried running the 3D Mark benchmark before changing the heatsink and after. The result is that it just passes the first test and then shuts down, while with the old stock one it would reach just half of it. I'm really out of ideas. Please help me PS: I've also tried formatting it, and reinstalling everything, without any luck. I think it's too late to call the warranty center, but it's just my thought. If that's necessary I'm gonna do it.