well, this is odd - I have several older PC's with GA-78LMT-USB3 main boards in them. one had a FX-4100 (4 core) and the other had an FX-6100 (six core). I installed windows 11 on my main PC (just vanilla) and imaged it. I loaded the image on the first PC and it seemed to work fine. Played with it all day - at the end of the day it had downloaded an update so I let it update and restart. After saying to hold on it was updating (or whatever that message was), it rebooted but the screen stayed black. Waited for hours, nothing, so I held down the power button, it shut down. Pushed the power button, it came back on, but no beeps, just a black screen. Tried a different, PS, CPU, removing the memory, clear CMOS, removing the battery, removing all the cables. Determined it must be the main board. Now bear in mind that these PC have been running windows 10 just fine for many years. I chucked the mainboard and set the case aside. Booted up the next one to windows 10. Played with it for an hour, it works flawlessly. I set aside an image of windows 10 and loaded the same image of windows 11 on it. Seemed to work perfectly, even activated with a digital license, and no uninstalled devices in device manager. played with it for hours after which it wanted to update, which I did with the exact same unfortunate result. Different PC, power supply, main board, CPU, memory, hdd, case but same model motherboard just one was revision 4.1 (blue board) and one was revision 5 (black board). Two for two on two perfectly reliable, long running PC. Both dead - will not beep or post at all. I think windows 11 murdered them both. Any ideas, I might have missed?