Before reinstalling, was I in your shoes, I would try and understand WHY that key combo doesn't work. After all, something similar MAY happen again, and if every time you go reinstalling without getting at the core of the problem, you'll never really solve it. The question you should ask yourself is this: Have you installed maybe some other software, inside or outside FS, that interferes with that key combo?
Be it as it may, have a nice reinstallation, if you go for that route.

There is no such a thing as overkill. Only unworthy targets.