if ((Get-Service -name "BITS").Status -eq "Running") {
    Write-Host "OK - BITS services is running"
} else {
    Write-Host "WARNING - BITS service does not seem to be running"
    Write-Host "Attempting to start.."
    Restart-Service BITS
    Write-Host "BITS service status is: " (Get-Service -name "BITS").Status
}