Ctrl keys not working on Windows 10

I have a big incognito here: After some time without use my laptop (kind a month), both Ctrl keys stopped work in functions like Ctrl+A, Ctrl+C and Ctrl+X, etc.

Ok, this might be a broken connector or malfunction keyboard, but when I try my keyboard on a online tester both Ctrl keys works! To be more strange, when I do a Ctrl+ click in a web browser link to open in a new tab, works fine. Also, when I have something in my clipboard and do a Ctrl+V.

The problem seems to be very specific.

P.S. I did all this tests and reinstalled my windows too.

Solution 1:

Copy & paste the following command into PowerShell to check for any keyboard remapping in the registry:

$KB = 'HKLM:\SYSTEM\CurrentControlSet\Control\Keyboard Layout'
Get-Item $KB

Does it display a property named 'ScanCode Map'?

PS C:\> $KB = 'HKLM:\SYSTEM\CurrentControlSet\Control\Keyboard Layout'                                
PS C:\> gi $kb                                                                                        

    Hive: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control


Name                           Property
----                           --------
Keyboard Layout                Export ScanCode Map : {0, 0, 0, 0...}
                               Demo ScanCode Map   : {0, 0, 0, 0...}
                               ScanCode Map        : {0, 0, 0, 0...}


PS C:\>                                                               

If that value exists, it is quite likely remapping your keys. It does not exist by default & can be deleted. Sign out & back in for deletion to take effect.