The HP Elitebook 745 G4 is a Laptop made by HP. This page contains a do-it-yourself repair guide along with information that provides more details on using the HP EliteBook 745 G4
Author: Jeff Stephens, Released July 13, 2017, identified by model number B07GRB5Q6Y
Please elaborate on what you mean by "not working"; how did you test them and exactly what ports are you talking about?
por Jerry Wheeler