It could be due to software or hardware issues, resource overload, or improper shutdown settings.
It could be due to software or hardware issues, resource overload, or improper shutdown settings.
Yes I'm a dev and no webserver or any dev tool are running when it happened. I checked I EventViewer as suggested above and there are zero errors around when it happened. I finally managed to get a video of what is happening (occurred like 3 times in the last 3 weeks so it's a rare occurrence) : Some context to the video below. At the time of filming the the blue "Windows is shutting down" message disappeared and both my monitors are turned off (yellow LED instead of the greed LED). Also notice that both RAM sticks RGB LEDs are OFF (they are always ON when I power my PC). The rear fan LEDs are OFF then they come back ON... I'm pretty sure It's the BIOS and not Windows but never saw this kind of problem.
The problem seems to lie on the motherboard. (I also think the GPU RGB flickering is just camera effect, not a seizure.) To verify, check for OS-related issues on the motherboard. If you have another drive, format it and replace the original drive. Go to UEFI/BIOS, turn off ASUS Armoury-crate and MyASUS settings (likely under tools), and disable CSM. Perform a clean Windows 11 installation on the new drive, install all drivers, and skip Armoury Crate or any motherboard/network tools. Ensure Device Manager shows no errors. Restart and test shutdown. If it works, the fault is likely in the OS with your original drive. Otherwise, the hardware is faulty.