AssassinXpq

I load in FSX-SE, i start up the aircraft and as i open the FMC and click on menu the screen flashes and goes back to black. This happens with all buttons on the FMC. I had groundhandlingV6 which i removed but still the same problem occurs. Also in the basic FMC, if i click on the bottem tabs it resets back to the first tab. Airbus A320