Hi.I know this is an old problem, I had it before when I had iFly installed on my laptop. At the time I found the solution on these forums, but I can't remember what that was anymore.The problem:I installed iFly FSX on a PC running Windows 7 64 bits. Before that, it was installed on the same PC, this time with Vista 64 bits.When I start FSX and choose any iFly model, it displays with blank FMS, ND, PFD, EICAS.The ACFT configuration is:Engines running, but Eng Gen not onlineAPU still running, on busesBATTERY sw ONStandby Power AUTO.As the Overhead panel, Control Stand panel, and Thrust Control panels are working, I did a complete shutdown, bringing it to a cold & dark condition.From here I performed a normal power-up procedure, but the problem persists.For info, I know how to start/fly an 747-400, as that what I do for living.Any help would be appreciated, thank youRegardsZeaviador

:( Problem solved, much easier than expected.Just installed latest FSUIPC 4, all screens displaying normal now.Thanks anywayZeaviador