just wondering, l use my normal 747 with no problems but with the 747F after approx 30sec the display goes off and help on this please... The aircraft is still running and can fly but no display thanksPaul

I think you might have a validation issue.You need to uninstall the 747-400F then the 747-400PAX using the windows add/ remove programs ,,restart your PC,,,re-install the 747-400,, restart your PC...start flight sim and check that all is well ..reinstall the Cargo version...restart your PC after validation and installation.If your problems persist then you need to contact PMDG support with a well detailed e-mail of proof of purchase and invoice details.Good luck.

thx bud will do