The reboots began within the last two weeks. No blue screen, no warning, just a reboot. The reboots occur at random times and under random conditions. The machine is not hot nor under load when the problem occurs.
Previously, I had read that a percentage of Windows11 PCs were affected by a Windows software update, and that by falling back to the previous version, the problem would be resolved. I had tried that several weeks ago, and it worked. Intentionally (and unfortunately), in the process of trying to do a clean install of Windows11, I completely erased the main drive (an NVMe SSD) and whatever ISO I'm using appears to be the latest version of Windows11, so not sure how to acquire a prior version. I know a prior version would be a temporary fix, as things will have to be updated, eventually.
I've replaced the RAM (from year-old ARGB to month-old non-ARGB).
I've replaced the NVMe SSD (from Gen 3 to Gen 4).
I've replaced the power supply (from 750W to 850W).
I've replaced the AIO (from 240mm to 360mm).
All overlays (nVidia Graphics Card, Gigabyte Control Center, Logitech Hero mouse) are disabled or removed entirely.
Nothing is overclocked.
I'm actually surprised that the machine hasn't rebooted while typing this, as random and often as the problem occurs.
Intel(R) Core(TM) i7-14700KF 3.40 GHz
64.0 GB (63.8 GB usable)
nVidia MSI GeForce RTX 4070 Super
Gigabyte Z790 UD AC rev.1 MB
Windows 11 Home
Version 24H2
Installed 4/1/2024 (date was incorrect while looking for network/Wi-Fi drivers - actually installed 11/16/2024)
OS Build 26100.2314
Windows Feature Experience Pack 1000.26100.32.0