I have just formatted the pc and installed p3d v.3, I immediately installed the pmdg 737ngx, but when I select the pgmd 737 it shows me the black screens, black buttons, so not working. Strangely enough, he does not even ask me for the key to activate the plane. In addition, the operation center sees me 2 updates that I install, but at the restart of the same I still see the same updates, as if I had not done them.