Hmm, there is something seriously corrupt about your setup. I would recommend updating to the latest graphics drivers for your card, checking your gfx rendering settings, removing all plugins except for gizmo, maybe erazing your X-Plane prefs, re-installing the 737 and if all that doesn´t help, checking your card for a hardware malfunction.
I had something similiar a few years ago, and it turned out that my card was defective.
All the best, Jan