A few software glitches continue to spoil user experience on Windows 10, which is otherwise a reliable and efficient desktop operating system. The Start menu not working is one such glitch.
If you’re facing a similar issue, here’s what you should do to get it back to working.
Method 1. Try Restarting the System
If you can, restart your device as you will be amazed at learning how many issues this simple procedure can fix.
Press Alt + F4 to open the Shut Down Windows dialog box and restart your computer.
Also using the right mouse button on the start symbol and selecting Shut down or sign out then select Restart
Method 2. Use Command Prompt
In the command prompt box type Powershell and press Enter
Type in this command below and then press Enter
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}
NOTE: I would advise to copy and paste the above text into the command prompt box
You will see a lot of text scrolling in the command prompt box, once finished you can close the box by pressing the X top right.
Your Start menu button should now work