Ensure auto reboot is disabled properly

scripts/Windows/Scripts/Registry.ps1

@@ -61,9 +61,12 @@ $null = New-Module {
         Disables automatic reboots by Windows Update.
     #>
     function Disable-WindowsUpdateAutoRestart {
-        Set-ItemProperty "$wuPolicyPath\AU" `
+        $path = "$wuPolicyPath\AU";
+        $null = New-Item -Force $path -ErrorAction SilentlyContinue;
+
+        Set-ItemProperty $path `
             -Name NoAutoRebootWithLoggedOnUsers `
-            -Value $Value;
+            -Value 1;
     }
 
     <#