Registry

Detection Script

$key = 'HKLM:\KeyPath'
$name = 'KeyName'
$val = '0'

if (Test-Path $key) {
        if ((Get-ItemProperty $key).$name -contains $val) {
            Write-Output "Key and value exist"
            Exit 0
        }
        Else {
            Write-Output "Value not exist"
            Exit 1
        }
}
Else {
    Write-Output "Key and value not exist"
        Exit 1
}

Remediation Script

$key = 'HKLM:\KeyPath'
$name = 'KeyName'
$val = '0'

if (Test-Path $key) {
    Write-Output "Key exist"
        if ((Get-ItemProperty $key).$name -contains $val) {
            Write-Output "Key and value exist"
            Exit 0
            }
        Else {
            Write-Output "Value not exist"
            New-ItemProperty -Path $key -Name $name -value $val -PropertyType DWord -Force
            Exit 0
        }
}
Else {
    Write-Output "Key and Value not exist"
    New-Item -Path $key -Force
    New-ItemProperty -Path $key -Name $name -value $val -PropertyType DWord -Force
    Exit 0
}