777 Cockpit

How come in the 777 cockpit, the 2 screens in front of me work, but the two middle ones( between the copilot and captain) don't work. They're there but they don't show information such as engine RPM's. I've tried everything. I have the latest driver for my video card, and I also tried reinstalling it, but that didn't work either. Everything in this plane is default, and all the gauges files are there, and I have never re-sized or modified this aircraft. PLEASE HELP!