Yep, the replacement of the motherboard would have definitely caused the Service Tag number to no longer be displayed in the BIOS Setup. If you really want the Service Tag number back I would call Dell Tech support and explain about the motherboard replacement and ask them to send you the proper utility to install the Service Tag number in your new motherboard's BIOS. Since the Service Tag number is basically the serial number of the machine, advise tech support that you want to install the number in the event you ever re-sell the system. As for the SVCTAG.EXE program I was aware it was released for the 4500 model, but not the 4400. I suspect there is a another flavor of the SVCTAG program specific for your system. That's my best guess.
P.S. one more thought..... when you used the SVCTAG program did you pay particular attention to using CAPITAL letters in the syntax? It may make a difference.
Message Edited by Majestic on 07-11-2005 07:44 AM