Windows 10: Start Menu button not working, clicking the left mouse button on any element from the taks...

I accidentally deleted Microsoft.Cortana from SystemApps and ShellExperience now doesn't work.

I ran sfc /scannow and it restored the files BUT start button still doesn't work. I feel like I'm missing something.

Help pls.

:)

 

Start Button displaying but not working


The start button was working until there was a forced reboot (power failure). Then left click (normal click) over the start button does absolutely nothing. Right click brings up a menu but "programs" and also "settings" are missing and not included on this list. Search or Task View buttons do not work either with "normal" click. Does anyone have any suggestion or fixes?
Thank you in advance *Huh
Sue

 

Left Click does nothing on start button

I was having the same problem. Of the five steps you list I tried the third. By going to Full Screen ON and then back to OFF, The menu came up fine when I left clicked. Thanks!

 

Left click button no longer works when selecting the windows


Suddenly when I turned on my machine, the left click button on touchpad will no longer work,right click works fine but no left click. This is also true for the touch screen. If I touch the window icon to open the menu, it changes color but does nothing.

Things I tried:
1-Connected an external mouse and it also doesn't work with left click.
2-I tried a restore point from last week to see if that solved the problem. Still the same.

I have no idea what I did to disable the left click button. Could have been caused by a windows update??

Can anyone give me some ideas of where to start?
Thanks,