The PC turns off during certain games.

I completely reinstalled Windows and reinstalled the games. Reinstalled the drivers.

There is a problem with the BIOS, they write that to update BIOS you need usb 2.0, but on my motherboard all prots are usb 3.2. In Windows events, an error is displayed in the BIOS and the intermediate saving of metadata fails (I couldn’t understand what it is). I think it's easier to buy a new motherboard. Logically, this is the last thing that has not been changed or tested.

It's encouraging that your PC remained stable during the FurMark stress test, suggesting that the GPU and power supply are likely functioning correctly under heavy load. However, since you're still experiencing black screen crashes during other activities, you should explore additional areas that could be contributing to the issue.

Even if you've previously updated your graphics drivers, remnants of old drivers or corrupt files can cause instability.

1.- Perform a Clean Driver Installation use Display Driver Uninstaller (DDU):

-- Boot into Safe Mode and run DDU to completely remove all traces of the current graphics driver.

-- Reinstall the Latest Driver: After using DDU, install the latest graphics driver from the official website.

Monitor Event Viewer for System Errors, Windows' Event Viewer can provide detailed logs that may pinpoint the cause of the crashes.

1.- Navigate to Control Panel > Administrative Tools > Event Viewer.

2.- Check under "Windows Logs" for any critical errors or warnings around the times your system experienced black screen crashes.

Check for Background Applications or Overlays some background applications, especially those with overlays (e.g., screen recorders, performance monitors), can interfere with system processes.

1.- Press Ctrl + Shift + Esc to open Task Manager.

2.- Navigate to the "Startup" tab and disable any non-essential applications.

Turn Off Overlays, if you're using applications like Discord, GeForce Experience, or others with in-game overlays, disable these features to see if stability improves.

Loose or improperly seated hardware components can cause intermittent issues reseat components:

1.- Ensure that the GPU is firmly seated in its PCIe slot.

2.- Check all power connectors to the GPU and motherboard.

Monitor System Temperatures overheating can cause the system to become unstable.

Consider BIOS/UEFI Updates, outdated firmware can lead to compatibility issues.

We ran the FurMark test and the PC did not turn off.

Hi, Ренат, I am Jeronimo, Thanks for reaching out! I'm an Independent Advisor and a Microsoft user like you.

Given that you’ve already replaced the PSU, CPU, and checked the RAM, the sudden shutdowns during heavy game loads are most commonly linked to either the GPU (its power delivery, cooling, or even connection cables) or the motherboard’s power delivery components (VRMs). By monitoring your system’s voltages and temperatures during stress tests, checking event logs for clues, and ensuring that your GPU’s power is delivered via the correct and secure cables, you can narrow down the issue. If a GPU stress test replicates the shutdown while a CPU test does not, you’ll have strong evidence pointing to the GPU or its immediate power connections.

Run a dedicated GPU stress test and note if the shutdown occurs during that test. Likewise, run CPU or overall system stress tests to check if the issue is isolated to the GPU load. If only GPU stress tests trigger the shutdown, the GPU or its power delivery is more likely to be at fault.