Help! Game looks like a Porygon took a dump on it!!!

I don't know how or why but I logged in today and my environment is flashing and glitching and is super messed up. There is no way I can play. Have no idea how to fix, and it is frustrating as all hell.

A photo of what I am dealing with http://imgur.com/5XQHVPc

Play on PC, tried messing with setting but they do nothing!

Your graphics card is overheating, happened to me before. All you have to do is upgrade your cooling in your system or hook up an external cooling system/fan to keep your system cool. Would recommend doing it soon before any damage is done to your graphics card. Hope it helps! ^.^