i installed windows 10 couple of day ago (upgrade from 8.1) , from first day i had a problem that was , after working with pc about 2-3 hour when click on start button , the menu opened with 1 second delay and also search in start menu not working (typing with keyboard not working in start menu)
i do some search in internet and find this solution
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
this work , but it is temporary and will work just for 2 or 3 hour and the same problem after this time
also i added prompt in loop in above code to find which app cause this problem , but after finishing the job , start menu problem was not fixed (because of number of app i cant to this again )