I'm having a frustrating issue with my PC. It only freezes and restarts while I'm gaming; when I'm just using the desktop or doing regular tasks, everything works fine. Here are the troubleshooting steps I've already taken: I initially had the PC plugged into a UPS but switched to a direct wall outlet. I tried using only one of my RAM sticks instead of both. I stress tested the CPU, GPU, and RAM with tools like Furmark and Prime 95 for over 15 minutes and had no crashes. Temperatures are looking good, and I made sure both EXPO and PBO settings are turned off.
As for my specs, I have a Ryzen 5 7600X, an RX 7900 XT, and 32GB of RAM (currently testing with just 1 stick), all powered by an 850W PSU.
I've had PSU issues in the past but replaced it with the current unit about a while ago. Everything was fine until I traveled for 14 days, and then these problems started cropping up a few days after my return. There's no blue screen; the game just freezes, and then the computer restarts. I'm unsure if this is a PSU issue again, or if it's related to the motherboard, RAM, or something else. Does anyone have suggestions for what I should check next?
2 Answers
How long does it take before it restarts during gameplay? Knowing the timing can help pinpoint if it's a heat issue or something else. Also, if you've started a memtest, that could reveal if the RAM is causing the problem.
Have you checked if the freezing happens consistently in the same game? Sometimes, specific titles can cause issues due to how they interact with your hardware. If it's consistent across games, it might point to a broader hardware issue.
I've played both Arc Raiders and CS, and it happens with both games.

It usually happens around 7 minutes into the game. I'm doing a memtest now to see if that’s the problem, and I checked the health of the SSD; it's at 96%.