So uh listen guys. I'll try to explain as best as I can. I'm not a native English speaker, so sorry in advance. A month and a half ago I was playing watch dogs 2, and everything went well. Was playing about an hour and a half, and then my PC shut down and started a reboot loop. I forced a shutdown completely via the button on the case, and it stopped. Since then up until now it ran for 5 minutes and then rebooted. However, today it ran for a full hour and rebooted once. When it rebooted, it works fine, but I still think it'll shut down once again. I've tried everything. Removing all parts until only the mandatory ones were there. I've kept it in mint condition. Cleaned it every month, replaced the thermal paste, all of that stuff. The PC has been in my possession for about 5 years now. It hasn't done anything like this. No, I don't have any replacements to replace the parts and see if the issue persists. I really would like to get you guys' opinions and tweaks before I take it to an expert. If there are any more questions, I'd be glad to answer them.