My computer suddenly restarts out of nowhere when playing games like cyberpunk or ready or not
Posted by Narrow-Occasion7145@reddit | buildapc | View on Reddit | 49 comments
Got it—here’s a corrected version you can post 👇
I’m having an issue where my PC randomly restarts during heavy games like Cyberpunk 2077 and Ready or Not, but not in lighter/optimized ones like Resident Evil 3. The restart is instant (no BSOD), and temps are fine (GPU around 46°C). My specs are: RTX 3060 12GB, i5 8th gen, 16GB RAM (2x8), and a new 750W PSU. Motherboard is a Gigabyte H310M S2H. I tested a lot: CPU stress tests (like Cinebench) ran fine, and the GPU test in Cinebench also ran for about 10 minutes without issues. However, in real gameplay after \~20–30 minutes, the system suddenly reboots. I also noticed that my BIOS sometimes resets when I fully power off the PC (so I’m suspecting a CMOS battery issue). I rechecked cables and temps and everything looks normal. At this point it seems like the problem only happens under real mixed load (CPU + GPU spikes), not synthetic tests. I’m trying to figure out if this is a motherboard/VRM limitation, CMOS battery instability(not so much since i changed it and the bios still resets after the computer is fully off), or something else with power delivery or RAM. Any help or similar experiences would be appreciated.
Thank you
RedRedKrovy@reddit
I had a similar issue with my daughters PC. Replaced the PSU and GPU. Only happened during video games. Never could pin it down. Then one day I was looking at the manual for the motherboard and realized I had the RAM speed set to higher than the motherboard stated it supported. Turned the RAM speed down in the bios to the highest the manual had listed and problem solved. Haven’t had a crash since.
Narrow-Occasion7145@reddit (OP)
my motherboard is set to 2666mhz for ram and that's the max it supports
RedRedKrovy@reddit
It might still be a good idea to try. I don’t know what brand RAM you have but it could be that there is a bad stick that made it past quality control.
Also you can use a memory tester like Memtest86 to see if your RAM fails or the random reboot happens during the test. Thats what led me to start checking the motherboard manual. The system was rebooting during a memory test.
n7_trekkie@reddit
Is your PSU crappy?
GuzDex@reddit
“New psu” yeah it looks like a psu issue
Narrow-Occasion7145@reddit (OP)
I js changed it today
GuzDex@reddit
and only now you're having issues?
Narrow-Occasion7145@reddit (OP)
No when i got the pc it had a 530w psu unkown company and the problem was there now i upgraded to this and still same problem thats why i dont think its psu anymore
GuzDex@reddit
ah i see, yeah hmm check event viewer for some more informaiton or logs
Narrow-Occasion7145@reddit (OP)
System kernel-Power 41
GuzDex@reddit
Hmmm you might need to do some driver updates or lower the power limit
Narrow-Occasion7145@reddit (OP)
I sent you a dm
Narrow-Occasion7145@reddit (OP)
No i just got it brand new its a MPIII750
ChocolateNeat4489@reddit
It shouldn't be labelled 750W. if the PSU was really able to deliver 50A @12V (which I doubt), all reputable makers would grade it as 600W. Cheap PSU means problems , if not straightaway, not much later.
stanknotes@reddit
Get something with an actual rating.
MagicPistol@reddit
I've never even heard of this brand before, and it's not in the spl PSU tier list. I wouldn't trust it.
Narrow-Occasion7145@reddit (OP)
I mean if i do get another one what should it be corsair?
MagicPistol@reddit
Look at the PSU tier list spreadsheet that another person commented.
Narrow-Occasion7145@reddit (OP)
The thing is that when i got the pc it had a 530w psu unkown company and the problem was there now i upgraded to this and still same problem thats why i dont think its psu anymore
MagicPistol@reddit
Maybe the issue is something else, or maybe you had 2 bad psus. Even if the PSU isn't the problem, I would still replace that garbage asap.
Narrow-Occasion7145@reddit (OP)
I just wanna know what the problem is so i can see what i can do (im on a budget😂)
MagicPistol@reddit
With everything you described, it does seem possible that you could have had 2 bad psus.
n7_trekkie@reddit
mars power seems to only make piece of shit PSUs. try replacing it https://docs.google.com/spreadsheets/d/1akCHL7Vhzk_EhrpIGkz8zTEvYfLDcaSpZRB6Xt6JWkc/edit?pli=1&gid=931697732#gid=931697732
Narrow-Occasion7145@reddit (OP)
Ill see what i can do in the mean time is there any other cause for this
GuzDex@reddit
not really tbh maybe bad wiring or bad cpu
ouija_bh@reddit
Faulty CPU or PSU.
Narrow-Occasion7145@reddit (OP)
Might it be the motherboard because reseting bios every shutdown is not normal and i have experience with IT but an issue like this has never came up because i suspected the psu i changed it brand new still the same problem
Saporificpug@reddit
Check CMOS battery?
AJuicyLemonZ@reddit
Gotta bring it to a ripperdoc
Advanced_Job_1109@reddit
Re seat all your power supply cables. I had a slightly loose one. And under decent load it would reset. Took me a month to figure it out. Same issue as you low end games ran fine. Higher end ones crashed to black and then restarted.
Narrow-Occasion7145@reddit (OP)
Did it give the same error in even viewer too?
Advanced_Job_1109@reddit
Never checked it. I'm terrible with software. I'm good with hardware.
Narrow-Occasion7145@reddit (OP)
Ill try that
Narrow-Occasion7145@reddit (OP)
Did it give the same error in even viewer too?
General-Gold-28@reddit
When you replaced your psu you used the new cables that came with it right? Not the original cables? Pin outs aren’t standardized and can cause issues
Narrow-Occasion7145@reddit (OP)
Yeah i used the ones that cane with it
Affectionate-Pie-708@reddit
Then pr9bably.psu
Affectionate-Pie-708@reddit
Probably overheating
Narrow-Occasion7145@reddit (OP)
That was my first thought but my temps were normal 50 60 max 70
Benjamin39Brown@reddit
Get a more powerful PSU
Apprehensive-Mix1863@reddit
Try the easy stuff first. You mention you did stress tests for GPU/CPU but did you run memory tests? Run mdsched.exe in command prompt.
Try even reseating your RAM or reslotting. If its in 1 and 3 try 2 and 4.
If the above fail then i’d look into PSU issues
Narrow-Occasion7145@reddit (OP)
I only have 2 slots ill remove one put into the other one …
Chaosr21@reddit
Bad ground maybe, pSU, loose ram, not enough power, or overheating. It happened to me recently but it was just overheating..felt like a damn space heater when playing games. Installed new fans and it was fine, now cold air blows out instead of heat
Narrow-Occasion7145@reddit (OP)
That was my first thought but my temps were notmal 50 60 max 70
Kikuriath@reddit
reliability monitor might help
Narrow-Occasion7145@reddit (OP)
Ill look into it
bloodswap@reddit
i'd say motherboard or psu
Narrow-Occasion7145@reddit (OP)
I have backup motherboards ill try them tomorrow asus i forgot the model tho
myfatherthedonkey@reddit
Definitely that would be my next test if I were in your shoes.