Roger that,
try reinstalling your Windows Action centre by following the steps here:
1. Search Powershell in Search box of Windows
2. Now, Right click and click run as administrator
3. Copy and paste this command into your Windows Powershell
Code
Get-AppxPackage | % { Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppxManifest.xml" -verbose }
then reboot.
Done, try to pm if you want.