PC Crashing intermittently during games, turning off and immediately restarting, no BSOD, no Overheating

[Remixer17]

Hi there! my pc seems to be having a issue i cant pinpoint, and its driving me crazy:
when playing games, it will work normally for anywhere from 10 minutes to a couple hours before suddenly shutting off and restarting like nothing happened
when checking event viewer it showed a group of "gameinput service" error every time it crashed and I re-installed and updated drivers, un-installed recently installed programs, and eventually when i was on my desktop it happened again
I then did a windows re-install from cloud (saving only the data i needed) and after reinstalling the software i needed for school / daily use, it worked fine for a couple days with no issue
earlier today it happened again, all my drivers are up to date, and even the "gameinput service" errors aren't appearing 
using built in windows tools i can see no corrupted data, and i don't know where to go from here other than a hardware issue / Bios Issue / Power issue

the PC Specs are
i7-13700k that showed no signs of degradation

RTX 3080 Strix OC (10gb Vram)
Asus Rog Strix Z790I Micro ITX motherboard
Corsair Dominator 64gb (2x32 5200mhz) 
Lian-li SFX power supply 850W

Corsair H150I Elite LCD with Artic Silver Thermal paste
Corsair mp600 and Samsung 980pro m.2 SSDs 1tb and 2tb respectively
Corsair 2000D RGB case 

Mini itx PC, it used to be in a Phanteks shift XT case with a h100 cooler but was swapped for temp reasons, no temp issues since

Bios is the same version as when i got it in 2023, i am not sure how to find it
(its not the newest one, i didnt update because I saw no degredation, and was afraid of causing more issues)
Windows 11 pro is as updated as it possibly can be, 64 bit

Any help is appreciated, my next step is a Bios update but I'm scared to do so, and i don't trust my local computer shop to do it
Is it possibly my CPU showing sings of degredation despite not showing a performance decrease? or my PSU not providing enough for the transient load? 
the issue did not appear until the first week of February, and the pc worked just fine with no issues from December 2023 -> January 2025
(other than overheating but a case and cooler swap fixed that)

 

 

 

[Remixer17]

I don't have any photos or videos of the crash, as it happens at unpredictable intervals, I'll try to get some if i can, but i also need to use the computer for school work for the rest of the night

[strange13930]

you could check temps when playing, and if you can get the error code it will help a lot figuring out whats wrong.

[Remixer17]

15 minutes ago, strange13930 said:

you could check temps when playing, and if you can get the error code it will help a lot figuring out whats wrong.

I tried watching temps but didn't see it go over normal for my device over the past few days, ~70*c - 80*c, but i can check again tonight, as for an error code I don't even know if i can find one, as there is no BSOD, the computer just shuts down, and event viewer doesn't show any errors other than a critical upon reboot saying it didn't shut down correctly, I'm not sure how i could get an error code for it

[KnoT]

21 minutes ago, Remixer17 said:

I tried watching temps but didn't see it go over normal for my device over the past few days, ~70*c - 80*c, but i can check again tonight, as for an error code I don't even know if i can find one, as there is no BSOD, the computer just shuts down, and event viewer doesn't show any errors other than a critical upon reboot saying it didn't shut down correctly, I'm not sure how i could get an error code for it

Watch GPU hotspot 

[Remixer17]

5 minutes ago, KnoT said:

Watch GPU hotspot 

I'll watch Hotspot using CPUID later tonight, see if its going over temp, is there any other things to check in the meantime though? i really don't believe its a temps issue, since i used to get them all the time in my old case before i swapped, and i haven't had any since then

[strange13930]

try doing something the makes your draw more power because there's a chance its your psu if its just shutting off

[Remixer17]

On 2/12/2025 at 5:07 PM, strange13930 said:

try doing something the makes your draw more power because there's a chance its your psu if its just shutting off

 

On 2/12/2025 at 4:49 PM, KnoT said:

Watch GPU hotspot 

Sorry for the delay, I'm back after doing some more testing

After doing stress testing and watching my PC temps, they never went above 80ish cpu wise, and 95 MAX at hotspot ~ 85 normally, 
as for my PSU it had no issues during load testing, and the computer didn't crash at all, even while running two lighter load games all day in the background (for testing purposes)

however, the second I opened up a different game, the computer crashed after about a minute, no voltage jumps, and no temperature jumps, just a sudden restart, no BSOD, so no error codes

it seems any games with a moderate - heavy load on the system causes it to crash, however Minecraft with shaders on all day caused no issues, so its seems more application based than power or temperature based

[gta6287]

I dont know if this might help, but i ran into almost similar kind of problem months ago. I fixed it by inserting the GPU into different PCIe slot. My motherboard has 2 PCIe slot, the above one seems to be the problem. Yours might be different case, but never hurt to try. Good luck.