diff --git a/scripts/windows/Run-GuestExhaustive.ps1 b/scripts/windows/Run-GuestExhaustive.ps1
index ba62baaa7..1fdca0a6a 100755
--- a/scripts/windows/Run-GuestExhaustive.ps1
+++ b/scripts/windows/Run-GuestExhaustive.ps1
@@ -11,6 +11,9 @@
 #>
 [CmdletBinding()]
 param(
+    [Parameter(Mandatory = $false)]
+    [ValidateSet("win11-drill", "win11-drill-baseline")]
+    [ValidateNotNullOrEmpty()]
     [string]$VMName = "win11-drill",
     [Parameter(Mandatory = $true)]
     [ValidateNotNullOrEmpty()]
@@ -64,6 +67,13 @@ param(
 Set-StrictMode -Version Latest
 $ErrorActionPreference = "Stop"
 
+if (-not (Get-Module -ListAvailable -Name Hyper-V)) {
+    throw [System.InvalidOperationException]::new("Hyper-V module is not available")
+}
+if (-not (Get-VM -Name $VMName -ErrorAction SilentlyContinue)) {
+    throw [System.IO.FileNotFoundException]::new("VM '$VMName' does not exist")
+}
+
 . (Join-Path $PSScriptRoot "Invoke-GuestPsDirectBounded.ps1")
 
 function Normalize-GuestVerifierSha256 {