Windows 11 update stuck on KB5040442

I have the same/similar issue with KB5040442 in many ways.

Windows Update tried to install it overnight in a scheduled update, and I got up in the morning and my PC was running, but the screen was blank, and keyboard was disabled and nothing would wake it up. Did a hard reset, and it came up with various things in the Windows 11 bootup including installing updates, and fixing startup etc, but it would result in the same thing, else the dotted circle loading before windows start - being locked in one position.

Another hard reset or two later, and it would eventually start windows, but the update was not installed.

Tring it again resulted in similar, but sometimes locking up part way through the Welcome screen where you put in your password, or after that, and keyboard control again disappeared (USB keyboard).

I once had the desktop load, partially, not all startup apps would load, and it ended up locking up.

Ended up removing the update and hiding it from Windows Update so it didn't try it again, but I have no idea what is going wrong with it or why it's not working.

I tried installing it manually too, but no change.

SFC /scannow and DISM commands revealed nothing for me either.