Hello there hope everyone is doing fine...I was recently flying the pmdg 737-900 the strange thing started happening this week....sometimes not always after taking off I retract the landing gear so the lever will go up but green and red lights will go on and the gear won´t retract added to that the displays FREEZE...When i press the G button again to lower the landing gear the red lights go off and the displays go back to normal again but the problem is that I can´t fly with landing gear down and when I retract the displays freeze...How can I fix this issue? I tried repairing but the same issue is happening and I don´t know the reason..sometimes it works normally others it don´t and usually when this happens I need to RESTART my whole pc to fix it because only restarting fsx wont fix the problem...

I fly the NGX for some years now on all the platforms (FSX, FSX:SE. P3Dv4) but never had such problems therefore my wild gues...could it be that you activated some failures in the FMGC something like service based failures (check in the FMGC somewhere under options)??

Other things that would help for troubleshooting will be to share more informations about you sim platforn, maybe NGX version (run PMDG Operations to see if there are any updates available),...