On some systems, after upgrading to Windows 8.1 you may see what appears to be screen corruption within certain applications or games. This can be caused by the system having stereoscopic 3D enabled, and the application starting in anaglyph stereo mode, which requires stereo 3D glasses to view properly.
To resolve the issue, right click on the computer desktop and open the NVIDIA Control Panel. Or, from the Metro interface you can start typing "Control Panel", select "Apps" on the right side, and choose "NVIDIA Control Panel".
Once in the NVIDIA Control Panel, on the left-side menu choose "Set up Stereoscopic 3D", and uncheck the box next to "Enable Stereoscopic 3D" as shown below.