Check "Show This PC Icon on Desktop" Status

<#
.SYNOPSIS
    Checks whether "Show This PC Icon on Desktop" is currently applied.

.DESCRIPTION
    Reads HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel \ {20D04FE0-3AEA-1069-A2D8-08002B30309D} and reports its current value,
    or reports that it isn't set (falling back to the Windows default).

.EXAMPLE
    .\Test-ShowThisPCOnDesktopStatus.ps1
#>

[CmdletBinding()]
param()

$regPath = 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel'

$value = Get-ItemProperty -Path $regPath -Name '{20D04FE0-3AEA-1069-A2D8-08002B30309D}' -ErrorAction SilentlyContinue

if ($null -eq $value) {
    Write-Host "'{20D04FE0-3AEA-1069-A2D8-08002B30309D}' is not set at $regPath (using the Windows default)." -ForegroundColor Yellow
} else {
    Write-Host "Current value of '{20D04FE0-3AEA-1069-A2D8-08002B30309D}': $($value.'{20D04FE0-3AEA-1069-A2D8-08002B30309D}')" -ForegroundColor Green
}