I have xplane 10 on desktop win 7,,,and laptop win 10 gtn 750 was working on both computers then my gtn 750 on laptop stopped working..tried to reload it 6 times but after installing the garmin trainer is just hung up cpu running at 16 percent i let it run for 20minutes but nothing.... and the gtn 750 shows up greyed out on computer with little gtn 750 showing in red at bottom .... what can cause this problem?? and yes my f1 account is activated for this purchase i do love that garmin 750