{Dell Portable Bios And Diags Rev A34 Zip} 12

Update: this "How to" is quite old now and seems not to work on newer models. Some people have had luck with finding newer Dell diagsnostic cd images or see this article: -hard-is-it-to-set-the-service-tag-on-a-dell-motherboard/

{Dell Portable Bios and Diags Rev A34 zip} 12