[reflection.assembly]::loadwithpartialname("microsoft.visualbasic")
$serial = Get-WmiObject win32_bios | select -expand serialnumber
$ready = $serial -replace " ", ""
$number = [Microsoft.VisualBasic.Information]::isnumeric($ready)
If ($number -eq $True) {
$name = "UMS" + $ready.substring(0, [System.Math]::Min(12, $ready.length))
}
Elseif ($number -eq $False) {
$name = $ready.substring(0, [System.Math]::Min(15, $ready.length))
}
(Get-WmiObject Win32_ComputerSystem).Rename($name)
Restart-Computer