I have got PMDG MD-11X BOXED EDITION. After Microsoft  FSX Service Pack 2 were installed all  the MD-11X gauges have  been black in the  3-D cockpit and the yoke is turned left but the throttles moves and the airplane moves too. In  the 2-D cockpit  the panel is grey and no gauges. The plane was uninstalled and then installed again useing the the serial number =the registration key , but that did not help. Could it be possible that MS FSX Service pack 2 is wrong installed ? Is PMDG`s Service Pack for MD-11X (FSX) meant for the boxed edition, too ? Could that help in this situation just like Just Flight has service packs for panel problems in DC-10 and A340 ? What might help in this situation ?

I have the boxed version also and after a while I experience the same symptoms as you.   It's a total reinstall. That corrects it or you can go for the 'repair' option.