Blizzard has admitted that there is an overheating bug in Starcraft 2. The good news is that they have also released an easy fix. The problem is that the frame rate in the game menu screens is not limited, which causes your graphics card to overheat from overworking itself.

Here is the fix for the Starcraft 2 overheating bug:

1. First find the "Variables.txt" file on your PC, which is located in your Documents / Starcraft II folder.

2. Second add the following variables to the file:

frameratecapglue=30
frameratecap=60

3. Save the file. This should cap the frame rate during the menu screens and will prevent your video card from overheating.