What to do if the win key fails in win10 system

What should I do if the win key fails in win10 system?

Right-click the taskbar and select "Task Manager", as shown in the figure

Select "Processes" in the Task Manager and find "Desktop Window" Manager", right-click and select "End Task", as shown in the figure

#In the opening interface, check "Discard unsaved data" and click "Close". As shown in the picture

In the task manager interface, click "File" > "Run New Task", as shown in the picture

In the opening interface, enter: dwm Click "OK", as shown in the figure

Then right-click the start button, select "Run", and enter: powerShell click "OK", as shown in the figure

##Enter in the opening interface: Get-AppxPackage | % { Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation )\AppxManifest.xml" -verbose } Press the "Enter" key and wait for the command scrolling to complete before repairing, as shown in the figure

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