After running this command on powershell to try to fix the Windows Store problem,
Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml
(http://answers.microsoft.com/en-us/windows/forum/windows_10-windows_store/windows-10-store-closes-immediately-after-opening/620dfec2-101e-4dd9-8d9d-e838b6c6fa55?page=4) One of the user gave me advice to put this in powershell. This completely crippled my Dell Insprion 3847, for example, ll the apps that I downloaded no longer works, and Microsoft's default apps don't even work! I need help to fix this problem.