Right-click has stopped working

I recently had to open Disk Management and tried to do this using right-click on the Windows symbol and selecting that option. Nothing happened.


I found another way to do it, but have now noticed that other right-click issues are happening, eg I recently tried to run several programs as Admin by right-clicking but nothing happens.


I am the only user and I'm setup as an Administrator, so this should not be happening.



Tried to run sfc.exe /scannow in a CMD window to check for integrity violations but it refuses and tells me I need to be an Admnistrator.


So, I tried to open a CMD window as Administrator by right-clicking the Command Prompt and clicking Run as Administrator option - nothing happens.


So I'm now going round in a vicious Win10 circle. WTF?


Nothing major has happened to my PC except Win10 upgrades so I suspect that's the culprit, but does anyone know what I can do about this?


Thanks.

That worked brilliantly! many thanks!

yes, Win + X brought up the menu, but clicking items was the issue - they just would not run. You were right about incompatible shell extensions and I followed the link you provided above which then led me to:
Winkey + X menu shortcuts not working in Win 8.1 (Winkey + X menu shortcuts not working in Win 8.1)
(Ignore the fact it's about Win 8.1)

I didn't much fancy the laborious task of using ShellExView (http://www.nirsoft.net/utils/shexview.html) to test each extention and re-boot EVERY time, so I read the whole thread and found that the same suspect progs cropped up a few times:
- AirDroid (which I had already uninstalled some months ago, but it gave me no issues)
- NCH Zip Express - which I had recently installed (along with all the other crap it adds...)

Hunted down all the NCH progs and uninstalled them and my right-click is now working perfectly! - didn't even have to re-boot.

Many thanks again!