I lost my old PC to an internal fire (talk about exciting!) and have replaced it with a much nicer machine. I was able to reload the 747-400 and get it working just fine with one serious problem. The PFD and MFD show all the proper information upon starting, but within 2 minutes they both go to blank screen and stay that way. I hame looked thru the manual for something that will alleviate the problem but so far no joy. Any ideas?Thanks,Bill Ehmig

That sounds like a verification problem. Try a reinstall, and if that doesn't work, send PMDG support an email with your info, and they will get you up and running.

Thanks Mike, wilco.Bill Ehmig