Unfortunate I Download a BMW Police wagon with a (German) self Install program, since then my FSX any propeller aircraft will not starts, because this BMW did change the configuration to cold starts and some of the propeller aircraft does not have the switch to turn “On” the electrical navigation the Ctr M on and Ctr E will turn on but not the instruments and turns the propellers for a few second but it will not fire the engines, Any idea how to correct this problem, or there’s some ways to change back the original global config file so the electrical navigation do turn on as when the generator and magnetos are switch on?