Finished first pc build around two weeks ago and since day one been experiencing sudden shutdowns exclusively when running games. I will be playing something and all of a sudden, screen will turn black, I hear a click noise from my pc, and the lights shut off, all at once. I am completely lost, and have no idea how to fix this. There are no other critical events listed in Event Viewer aside from the Kernel-Power 41 error. I know this particular one can be a real pain to track down, but I was hoping someone here might have some advice for me :]

I’m unable to reliably reproduce the issue— It's occurred within 20m of launching a game like GTA V, but other times I'm able to run something like Fortnite for hours on end with all the ray tracing and whatnot maxed on highest settings. A common trigger for the sudden crashes appears to be when trying to apply any sort of graphic settings changes inside a game, but other times I can change them just fine. The shutdowns happen in the middle of gameplay as well, at around the same frequency.

The crashing doesn't occur in every game I play. My pc did not crash a single time when playing through an older game like portal 2. It's crashed the most times while playing Fortnite, likely because that's the game I've played the most so far on this pc. Because the crashing is so random it's really difficult to test across different games/circumstances. For instance, I have gone five hours without a crash in Cyberpunk with ray and path tracing enabled, but crashed within the first 20 minutes of launching GTA V Enhanced.

I have so far tried:

• reseating all cables in my psu & motherboard
  
• removing GPU drivers with DDU and reinstalling directly from NVIDIA while in safe mode
  
• starting over with fresh windows 11 installation
  
• updating BIOS to latest version
  
• disabling integrated graphics in BIOS
  
• making sure EXPO was disabled in BIOS
  
• running sfc /scannow (returned fine)
  
• plugging pc into a different surge protector and outlet
  
• unplugging riser cable and slotting GPU directly into the motherboard
  
• collecting HWiNFO logs- saw nothing that immediately stood out to me. The img attached displays some of the final values prior to a crash across some (what I think to be) important categories.
  
• leaving synthetic benchmarks (OCCT [ran the 3D Adaptive, Power, CPU, and Memory test], Furmark, Unigine Superposition, Cinebench, 3Dmark free version) to run for extended periods of time, none of which ever resulted in a shutdown.
  
• Setting GPU power limit to 83% (lowest it goes for me in MSI afterburner)
  
• Checking "C:\Windows\LiveKernelReports" (the files/folders inside that directory are dated back more than a week ago yet I have crashed numerous time since then. I didn't really know what I was doing but I tried my best to analyze them in WinDbg and saw some error labled "VIDEO_TDR_TIMEOUT_DETECTED (0x117)." Regardless, I think the fact that the file date doesn't correlate with crashes rules them out.)

Specs are as follows, I purchased everything brand new:
CPU: AMD 7800x3d
CPU cooler: Lian Li Hydroshift II 360 TL
Motherboard: GIGABYTE B850 AORUS ELITE WIFI7 ICE rev. 1.x (currently on BIOS version F6)
Ram: Corsair Vengeance DDR5 RAM 32GB (2x16GB) 6400MHz
SSD/HDD: Samsung 990 EVO PLUS SSD 2TB
GPU: MSI RTX 5060 Ti 16G Gaming Trio OC
PSU: Corsair RM750e ATX 3.1 PCIe 5.1 Fully Modular 750W (2025)
Chassis: HAVN HS420 VGPU
OS: Windows 11 LTSC IoT 24H2 (Initially was running normal Windows 11, a new OS was my first step of troubleshooting. On second installation, I used a different USB, recreated the installer, and installed everything in offline mode.)

If anybody has any suggestions I would be truly grateful to hear them. I’m getting desperate enough to just try and go through the hassle of taking my pc apart and returning every single component while my window is still open.