I know the title seems like a trivial work, but it got bothering me for two days now. I got a unix machine, on which I have a windows 7 VM.
One of the key of the keyboard stopped working two days ago on the windows VM, and it's the Sharp (Sharp, hash, number-sign) key (while using the UK standard layout). I tried to swap the keyboard with another one, change the layout of both keyboard, it continues not working, even tried to uninstall the driver and reinstall it, nothing worked.
It seems to be windows-wide problem, because the key does not work on the login screen either. Tried to restart in safe mode, the key is not detected anymore, whatever the keyboard or the layout...
The only thing I did two days ago was uninstalling the German language pack, but I did restore windows to that date, but the key is still not functioning, so I don't think it is linked.