Open PowerShell
Run: `Get-CimInstance Win32_BaseBoard | Select-Object -ExpandProperty SerialNumber`
Run: `Get-WmiObject Win32_BaseBoard | Select-Object -ExpandProperty SerialNumber`
Run: `(Get-CimInstance Win32_BaseBoard).SerialNumber`
Run: `(Get-WmiObject Win32_BaseBoard).SerialNumber`
Run: `wmic baseboard get serialnumber`
Run: `Get-CimInstance Win32_BaseBoard | Format-List SerialNumber`
