I have been using the 737NGX for some time now...today i did 2 flights, the latter was a Geneva to Vienna...in the VC i pan around the cockpit as you do flicking switches and occasionally having a lookout down below...in the last 15minutes of the flight i could suddenly no longer pan around the cockpit, i couldn't zoom in and out using the + and - keys on my keyboard, i couldn't look left or right using the Numpad keys...and on landing my reverse thrusters wouldn't deploy when pressing F2!

 

This has happened in the past maybe once or twice and i cant work out why! Has anyone else had this? If so how did you fix this?!?! Its extremely annoying!

 

I used the PMDG 737-600 in this last flight...may i also add everything was fine up to the last 15minutes or so...im unsure if i some how pressed something to stop all the normal functions working but i really would like to solve this as its almost impossible to function this plane when suddenly the VC becomes stuck in an unhelpful position and the keyboard stops functioning!

 

Cheers!

Make sure you didn't accidentally click the keyboard direct entry mode on the FMC - you'd know by a green outline around the scratchpad on one of the CDUs and it'll intercept all keypresses and they won't do their normal FSX functions.

 

You could also be running into the start of an OOM situation - see here to check that:
http://support.precisionmanuals.com/kb/a108/vas-management-stopping-out-of-memory-oom-errors

O maybe i did now you mention it!....IF that is the case what do i do to 'undo' that? (Just to be clear)

also if you run fsx in windowed mode make sure fsx is the window in focus - click the mouse onscreen to be sure.

Always run FSX in full screen mode however on the topic,i do sometimes press the 'windows' key on my keyboard to minimize FSX so i can open Fraps for screenshots, and when i try and return to FSX the screen remains black, i can hear everything but i have to press like random keys and then the screen 'wakes' up...quite odd

Have you tried to press ALT+ENTER twice? When I am full screen and have to go to the desktop for any reason, that´s what I do to restore FSX in full screen mode.