Hello when loading PMDG 737 all pop-up on the screen don

Hi Jose,you should have read another post below.You didn't read the manual carefully enough. You REALLY have to start the flightsimulator with the Cessna, then stop the engine, turn of the battery, pull out the mixture but turn on the avionics master! So as stated in manuals. I tried it also with the method you used and got the same result...:-) .