Latitude E7250 Windows Activation Help

Hello, I have a Dell Latitude E7250 that I recently reset it to factory settings. When I tried tuning laptop on afterwards and a screen that pops up that says, "Windows isn't Activated" then when I scroll down and click on the "Activation Details" section it says

Error Code: 0x80072EE7

The serve name or address could not be resolved

The laptopl will not let me go online with WIFI, stating that there ae no Wifi connections available.

Could anyone tell me how I could resolve this without having to connect to WIFI with the laptop?

Please and Thanks!