I'm facing an issue where my computer unexpectedly restarts when I'm playing demanding games like Cyberpunk 2077 and Ready or Not. It doesn't happen with lighter games such as Resident Evil 3. The restarts occur instantly without any blue screen. My temperatures are normal (around 46°C for the GPU), and my specs include an RTX 3060 12GB, i5 8th gen processor, 16GB of RAM, and a brand new 750W power supply. The motherboard is a Gigabyte H310M S2H. I've performed stress tests—Cinebench for the CPU and GPU ran without problems. However, when playing real games for about 20 to 30 minutes, the system does a sudden reboot. Additionally, I've noticed that sometimes my BIOS resets when I shut the PC down, leading me to think there might be a CMOS battery issue. I've checked all cables and temperatures, and everything seems fine. This problem mostly arises under mixed load situations (both CPU and GPU spiking). I'm trying to pinpoint if this is due to a motherboard or VRM limitation, power delivery failures, or possibly RAM issues. Any advice or similar experiences would be helpful! I also got a critical error in the event viewer labeled System kernel-Power 41.
5 Answers
I'd lean towards the motherboard or the power supply. It’s weird that your BIOS resets—you might want to inspect the motherboard for any visible issues. If you have a spare motherboard, trying that could help isolate the issue!
You should check your system's reliability monitor for additional clues. Sometimes it can give you information regarding system failures that the event viewer might miss.
You might want to run some memory tests. Use mdsched.exe from the command prompt to check if your RAM is consistent. Also, try reseating your RAM in different slots if possible; that can sometimes resolve issues.
It sounds like your power supply could be the culprit. You mentioned it's new, but sometimes new PSUs can have issues too. Have you checked if it's rated well for your setup? Also, consider checking the quality of the power supply itself; sometimes they're not built for high loads despite being rated for higher watts.
It could be overheating, but since your temps seem okay, it might not be the main issue. Just out of curiosity—did you use the new cables that came with your new PSU? Not standardizing pinouts can lead to issues as well.
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