New
#11
I work the Dell forums (since 2002) and the Service Tag number is considered personal data and not allowed on the Dell forums.
The Dell spec's do not list any motherboard model/part number(s).
I also agree with Try3 that with an 8 year old laptop it may time to consider a new/newer replacement. Dell considers this a "legacy" model and does not support Win 10 (no drivers) on this model.