hey all..i have bumped into a very annoying problem with my 737 of PMDG.if someone could help me solve it i would thank him very much.few days ago i installed Windows7(by the way it is working great:D).as i finished with this step i started to install the FS9 and its addons(includes the PMDG737).when i was done with this i tested it and found that it works well. yesterday, i wanted to fly another flight..i opend the simulator and chose the aircraft and started the flight..i opend the overhead panel and started the start up..i opend the battery, stand by power etc and than i noticed that the generators and the APU GEN lights did not changed color to blue as required.furthermore the all screens in the cockpit didnt work.if necessary i can bring relevant photo.thank you very much for helping!

problem solved..thanks all