Do you have a keyboard with Gaming Mode like the Logitech G110? If you do make sure Gaming Mode is off as it disables windows key and all other keys irrelevant to your game.
Instead of testing on apples, test on a car (that you own preferably). If a blue menu doesn't come up with any of the keys (windows, action key 10 rebinds etc) then you will probably need some personal help from @Ciaran.
@unconnected has it right, when it comes to issues like this try rebinding action key 10 in your options menu, this is the one that is used for most interactions on the sever.