Bought a used SL3 for my father a few years back. The audio on it failed after a few months -- hardware issue, speakers/audio jack don't work, but bluetooth audio is fine -- and then he passed away and left it to me. It's been working fine for the last three years, but sometime in the last week or two the keyboard and touchpad have stopped working. But here's the thing, they only don't work when booted into Win11. If I boot into UEFI they work fine, if I boot off a USB into Linux they work fine. Tried reinstalling drivers, running repairs, got lots of weird failures, so I did a Win11 system recovery and they STILL don't work under Win11, on a clean install!

I'm thoroughly baffled. I can install Linux on it to continue using it but would prefer to run Win11. Anyone else seen anything like this?