# run in an elevated PowerShell
Write-Host "Starting stealth patch... (you must be Administrator)" -ForegroundColor Cyan

# 1) Set values WMI reads from (SMBIOS/BIOS registry)
$biosKey = "HKLM:\HARDWARE\DESCRIPTION\System\BIOS"
Try {
Write-Host "Patching BIOS registry keys..." -ForegroundColor Yellow
Set-ItemProperty -Path $biosKey -Name "SystemManufacturer" -Value "Dell Inc." -ErrorAction Stop
Set-ItemProperty -Path $biosKey -Name "SystemProductName" -Value "XPS 8930" -ErrorAction Stop
Set-ItemProperty -Path $biosKey -Name "BIOSVendor" -Value "Dell Inc." -ErrorAction Stop
Set-ItemProperty -Path $biosKey -Name "BIOSVersion" -Value "1.0.0" -ErrorAction Stop
Write-Host "Registry BIOS keys patched." -ForegroundColor Green
} Catch {
Write-Host "Warning: Could not set some BIOS registry keys: $_" -ForegroundColor Red
}

# 2) Remove common VMware registry traces (if present)
Try {
if (Test-Path "HKLM:\SOFTWARE\VMware, Inc.") {
Write-Host "Removing HKLM:\SOFTWARE\VMware, Inc. ..." -ForegroundColor Yellow
Remove-Item -Path "HKLM:\SOFTWARE\VMware, Inc." -Recurse -Force -ErrorAction SilentlyContinue
Write-Host "Removed VMware registry key." -ForegroundColor Green
} else {
Write-Host "No VMware registry key found." -ForegroundColor Gray
}
} Catch {
Write-Host "Failed to remove VMware registry key: $_" -ForegroundColor Red
}

# 3) Try to rebuild/repair WMI repository so changes propagate
Write-Host "Verifying WMI repository..." -ForegroundColor Yellow
$verify = & winmgmt /verifyrepository 2>&1
Write-Host $verify

if ($verify -match "inconsistent") {
Write-Host "Repository inconsistent — attempting salvage..." -ForegroundColor Yellow
$salvage = & winmgmt /salvagerepository 2>&1
Write-Host $salvage
} else {
Write-Host "Repository appears consistent." -ForegroundColor Green
}

# 4) Restart WMI service (winmgmt) — may fail if dependent services prevent stop
Try {
Write-Host "Restarting Windows Management Instrumentation service..." -ForegroundColor Yellow
net stop winmgmt /y | Out-Null
Start-Sleep -Seconds 2
net start winmgmt | Out-Null
Write-Host "WMI service restarted." -ForegroundColor Green
} Catch {
Write-Host "Warning: could not gracefully restart winmgmt. It may require a reboot." -ForegroundColor Red
}

# 5) Final check: display the new WMI values
Write-Host "New WMI values (pre-reboot):" -ForegroundColor Cyan
Get-WmiObject -Class Win32_ComputerSystem | Format-List Manufacturer, Model, TotalPhysicalMemory, Name
Get-WmiObject -Class Win32_BIOS | Format-List Manufacturer, SMBIOSBIOSVersion, SerialNumber

# 6) Reboot to ensure SMBIOS and WMI read the new values
Write-Host "Rebooting system to ensure changes take effect..." -ForegroundColor Yellow
Start-Sleep -Seconds 3
Restart-Computer -Force