My Windows 10 doesn't show the desktop and start menu
Solution 1:
Open powershell in admin. (Winkey-X, A, accept the admin elevation, then type powershell in the elevated cmd window and press enter.)
Once you have an Administrator Powershell window, run this command:
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
Reboot.