I have just purchased PMDG 7373 NG 600/700.. installed same and am trying to get my first flight going. when I access the FMC by click on the F .. I get the FMC coming up but am not getting any response when I click on the LSK.. either left or right...is there another 'switch' to activate the FMC or is there something in the engine start process that makes the FMC come to life?Listening for a reply..EDDIE HAYNES

Just having the APU running should bring it to life but did you line select FMC from the initial menu?Gerry

not even APU is required i think, battery and ground power is i think enough.

hanks for answers..now having a problem with the actual computer..will advise what happens when I get the system back up and running Eddie Haynes