Minecraft wiki entry for Crash, associated text: If the player's computer appears to not be suffering from overheating related issues, another cause of game crashing could be a damaged component, especially either the RAM, or the video card. If the problem just recently started occurring, and the player has not recently installed any major updates or software such as Anti-Virus suites, the player may want to take their computer to a shop to have it tested, or they can do it yourself using tools such as "memtest86+", "Furmark", etc. (however these tools tend to require a medium to large amount of computer knowledge).