There is a growing problem with scam phone calls going around. You may get bogus calls telling you that your computer is infected and you need to press the Windows + R key or you could loose all your data. What this does is open the Run command on your PC and they will have run a command to clean it, but what they are doing is infecting your PC with malware and locking your PC down. What they plan on doing is holding your system ransom until you pay them.
No one is going to call you out of the blue and tell or ask you these things, be smart. Hang up the phone, if you have the ability to block the number do it. You could always tell them you are running a Mac, Linux box or Chrome book which all have no Windows keys.