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Why can't I open my start menu after installing Windows 10?

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Windows Central Question

After installing Windows 10 in August around mid September my start menu stopped working. It gives me a critical error and says it needs me to sign out to work the issue but it does not work. For more details, I have a dell laptop that previously had windows 8.1. I have searched countless forums on how to solve the issue but I am still not able to open my start menu, open the app store, nor use the icons in my taskbar. Does anyone have a solution for this?Thank you.


Community Review Team
Nov 12, 2012
Try Ctrl Alt Del and get Task Manager.

Run cmd.exe as administrator.

Try the sfc /scannow command.
You can Bing that for more information.