diff --git a/package/win/pre-install.ps1 b/package/win/pre-install.ps1
new file mode 100644
index 0000000..79a68d8
--- /dev/null
+++ b/package/win/pre-install.ps1
@@ -0,0 +1,92 @@
+# DragonMoonlight Pre-Installation Check Script
+# Runs elevated before files are copied during installation
+
+param()
+
+$ErrorActionPreference = "Stop"
+
+function Write-Info { Write-Host $args -ForegroundColor Cyan }
+function Write-Success { Write-Host $args -ForegroundColor Green }
+function Write-Warning { Write-Host $args -ForegroundColor Yellow }
+function Write-Error { Write-Host $args -ForegroundColor Red }
+
+try {
+    Write-Info "=== DragonMoonlight Pre-Installation Checks ==="
+    
+    # Check if running elevated
+    $isElevated = ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")
+    if (-not $isElevated) {
+        Write-Error "This script must run elevated (as Administrator). Installation cannot proceed."
+        [Windows.Forms.MessageBox]::Show(
+            "DragonMoonlight installation failed.`r`nThis installer requires Administrator privileges.",
+            "Installation Error",
+            [Windows.Forms.MessageBoxButtons]::OK,
+            [Windows.Forms.MessageBoxIcon]::Error
+        )
+        exit 1
+    }
+    Write-Success "✓ Running with elevated privileges"
+    
+    # Check Windows version
+    $osVersion = [Environment]::OSVersion.Version
+    $buildNumber = [int](Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' 'CurrentBuildNumber').CurrentBuildNumber
+    
+    Write-Info "Windows version: $($osVersion.Major).$($osVersion.Minor) Build $buildNumber"
+    
+    # Wintun requires Windows 10 2004 (Build 19041) or later
+    if ($buildNumber -lt 19041) {
+        Write-Error "This system does not meet the minimum requirements."
+        Write-Error "DragonMoonlight requires Windows 10 (Build 19041/2004) or later."
+        Write-Error "Current build: $buildNumber"
+        
+        [Windows.Forms.MessageBox]::Show(
+            "DragonMoonlight requires Windows 10 (Build 2004) or later.`r`n`r`nYour system is running Build $buildNumber, which does not support the required Windows Filtering Platform features for Wintun.`r`n`r`nPlease update Windows and try again.",
+            "Unsupported Windows Version",
+            [Windows.Forms.MessageBoxButtons]::OK,
+            [Windows.Forms.MessageBoxIcon]::Error
+        )
+        exit 1
+    }
+    
+    Write-Success "✓ Windows version check passed (Build $buildNumber >= 19041)"
+    
+    # Warn about driver signature enforcement
+    Write-Info "Checking driver signature enforcement status..."
+    
+    try {
+        $signingLevel = (Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\SecureBoot\State' 'UEFISecureBootEnabled' -ErrorAction SilentlyContinue).UEFISecureBootEnabled
+        if ($signingLevel -eq 1) {
+            Write-Warning "⚠ Secure Boot is enabled. Ensure that Wintun driver signing certificate is trusted."
+        } else {
+            Write-Success "✓ Secure Boot is disabled or not detected"
+        }
+    } catch {
+        Write-Info "Could not determine Secure Boot status (this is normal on non-UEFI systems)"
+    }
+    
+    # Log pre-install success to event log
+    Write-Info "Logging pre-installation check to event log..."
+    try {
+        if (-not ([System.Diagnostics.EventLog]::SourceExists("DragonMoonlight"))) {
+            New-EventLog -LogName Application -Source "DragonMoonlight" -ErrorAction SilentlyContinue
+        }
+        Write-EventLog -LogName Application -Source "DragonMoonlight" -EventId 1000 `
+            -Message "DragonMoonlight pre-install check passed. Build: $buildNumber" -EntryType Information
+        Write-Success "✓ Event log entry created"
+    } catch {
+        Write-Warning "Could not write to event log (non-critical): $_"
+    }
+    
+    Write-Success "=== Pre-installation checks completed successfully ==="
+    exit 0
+}
+catch {
+    Write-Error "Pre-installation check failed: $_"
+    [Windows.Forms.MessageBox]::Show(
+        "Pre-installation check failed:`r`n`r`n$_",
+        "Installation Error",
+        [Windows.Forms.MessageBoxButtons]::OK,
+        [Windows.Forms.MessageBoxIcon]::Error
+    )
+    exit 1
+}