For some odd reason W7 has recently taken to shutting down when I press the # key. It does this even in combination with other keys, like Shift, Alt etc. I don't have much use for the key but sometimes I do use it and almost always forget that it triggers an immediate shutdown. I tried using an app that I remembered using for different reasons in the past called Shutdown Guard but it doesn't seem to recognise the shutdown attempt or try to block it. Maybe it is a fault with the keyboard but I don't have another one to try in it's place. Any ideas?