init

upgradechecker.ps1

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+# Require admin rights
+If (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(`
+    [Security.Principal.WindowsBuiltinRole]::Administrator)) {
+    Write-Error "Please run this script as Administrator." 
+    exit
+}
+
+$results = @{}
+
+# CPU Check (existence assumed OK for this test)
+$cpu = Get-WmiObject Win32_Processor
+$results["CPU Present"] = $true
+
+# RAM Check
+$ram = [math]::Round((Get-WmiObject Win32_ComputerSystem).TotalPhysicalMemory / 1GB, 2)
+$results["RAM >= 4GB"] = $ram -ge 4
+
+# TPM Check
+try {
+    $tpm = Get-WmiObject -Namespace "Root\CIMv2\Security\MicrosoftTpm" -Class Win32_Tpm -ErrorAction Stop
+    $results["TPM Present"] = $tpm.TpmPresent
+    $results["TPM Ready"] = $tpm.SpecVersion -match "2\.0"
+} catch {
+    $results["TPM Present"] = $false
+    $results["TPM Ready"] = $false
+}
+
+# Partition Style
+try {
+    $disk = Get-Disk | Where-Object { $_.IsSystem -eq $true }
+    $results["Disk is GPT"] = $disk.PartitionStyle -eq 'GPT'
+} catch {
+    $results["Disk is GPT"] = $false
+}
+
+# Boot Mode
+try {
+    $firmware = Get-WmiObject -Class Win32_ComputerSystem
+    $results["UEFI Boot"] = $firmware.BootupState -like "*UEFI*"
+} catch {
+    $results["UEFI Boot"] = $false
+}
+
+# Secure Boot (Optional)
+try {
+    $sb = Confirm-SecureBootUEFI -ErrorAction Stop
+    $results["Secure Boot Enabled"] = $sb
+} catch {
+    $results["Secure Boot Enabled"] = $false
+}
+
+# Final Verdict
+$eligible = $true
+foreach ($check in $results.Keys) {
+    if ($results[$check] -ne $true) {
+        $eligible = $false
+    }
+}
+
+# Output
+Write-Host "Windows 11 Eligibility Check:" -ForegroundColor Cyan
+$results.GetEnumerator() | Sort-Object Name | Format-Table -AutoSize
+Write-Host "`nResult: " -NoNewline
+if ($eligible) {
+    Write-Host "YES – This machine is eligible for Windows 11." -ForegroundColor Green
+} else {
+    Write-Host "NO – This machine is NOT eligible for Windows 11." -ForegroundColor Red
+}