check that reg property exists

Fix-EnableGPUScheduling.ps1

@@ -2,15 +2,22 @@ $key = "HKLM:\SYSTEM\CurrentControlSet\Control\GraphicsDrivers"
 $name = "HwSchMode"
 
 # Check to see if GPU scheduling is enabled
-$setting = (Get-ItemPropertyValue -Path $key -Name $name -ErrorAction SilentlyContinue)
-If ( $setting -eq 2 ) {
-    LogMsg "Hardware assisted GPU scheduling is already enabled"
-    $HardwareGPUSchedulingEnabled = $true
+
+If ( Test-RegistryProperty -Path $key -Name $name ) {
+    $setting = (Get-ItemPropertyValue -Path $key -Name $name -ErrorAction SilentlyContinue)
+    If ( $setting -eq 2 ) {
+        LogMsg "Hardware assisted GPU scheduling is already enabled"
+        $HardwareGPUSchedulingEnabled = $true
+    } Else {
+        LogMsg "Hardware assisted GPU scheduling is disabled"
+        $HardwareGPUSchedulingEnabled = $false
+    }
 } Else {
-    LogMsg "Hardware assisted GPU scheduling is not currently enabled"
+    LogMsg "Hardware assisted GPU scheduling is disabled"
     $HardwareGPUSchedulingEnabled = $false
 }
 
+
 # Find a GPU in the system so we can enable GPU scheduling
 If ( $HardwareGPUSchedulingEnabled -eq $false ) {
     LogMsg "  - Attempting to find a discrete Nvidia or AMD GPU"