I can't take credit for this at all, but this should work for you.

Try this: copy the following in Notepad and save it in server's desktop as .vbs file.

strComputer = "."

Set objWMIService = GetObject("winmgmts:" _

& "{impersonationLevel=impersonate}!\\" & strComputer & "\root\cimv2")

Set colBIOS = objWMIService.ExecQuery _

("Select * from Win32_BIOS")

For each objBIOS in colBIOS

Wscript.Echo "Manufacturer: " & objBIOS.Manufacturer

Wscript.Echo "Serial Number: " & objBIOS.SerialNumber

Next

Once finished, double click and should show you the Serial number.

See Adrián's post here: http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Unified%20Communications%20and%20Video&topic=IP%20Telephony&topicID=.ee6c829&fromOutline=&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.2cd3187b

Thanks,

Adam

Please rate if helpful