This may be reported as FSX software showing 3D, a Layered Image, or multiple colors, or bad colors.
Example of Stereoscopic 3D Setting
Note: In some cases multiple colors are related to the cable or input being damaged or loose.
However, We have heard of multiple reports of the setting becoming enabled, even though nothing was done on the customers end.
To resolve, make sure that the setting is unchecked:
1. Right Click on Desktop and Select Nvidia Control Panel, or use windows search to locate it.
2. Go To Stereoscopic 3d Settings, de-select the check mark enabling the feature (View Example)