completely unrelated to the OP’s issues, but interesting comments about Windows failing to boot with usb devices plugged in.
If I’m doing 3d cad stuff on my laptop I plug a mouse in. Normally I do this after it’s all started up; just because.
But, the other day I plugged the mouse in immediately without giving it a second thought and the computer failed to boot. Just sat with a black screen. I turned it off and back on again, got the same result and started to worry that perhaps something had gone zzzzzzt pop, when I realised that the mouse was plugged in and that was different to normal.
Unplugged the mouse, tried again and it was fine…
Weird.