Problem: Can't use Cortana search, open notifications or open the start menu. Can't run Insider Hub either

I've been searching google all day and tried several methods with no results.
* I created a powershell.exe file on the desktop and ran as administrator to use the "Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}" command but got nothing but errors and no result.
* Tried a system restore but that failed.

Hoping this can be dealt with without a fresh install but not liking my chances. Any advice would be appreciated.