so i got the pmdg 747-400 queen of the skies....now when i load the plane everything is normal, and after a min or so the PFD/MFD/EICAS screens go black....i noticed that when i start from cold and dark, they dont light up either....i tried spinning the brightness but nothing...so i thought i was doing something wrong...but when i loaded the plane already running and everything i noticed what i mentioned earlier....so, can anyone help???

You need to go to the Pmdg forum with this one , its a validation problem with your installation Check thier page http://forums1.avsim.net/index.php?showforum=136They will get you up and running Mark

Blank screens basically mean you have an invalid license. It's a common anti-piracy measure, but sometimes legit users will experience it. Technology aint perfect. PMDG support are very helpful and need to be consulted on this.