Been trying to play Legend of Grimrock. Cool game from what I can see but it is overheating my graphics card and crashing. I turned all the settings down, turned on vsync and it ran a lot longer but still crashed. Any suggestions? I don't want to try any more without doing something else for fear of frying my card.
When you say overheat, what does it cause? A crash, or does it stop operating (screen goes black)? How hot is it getting?
Unless it's getting to 100+ C (depends on the ambient temperature of where you live though), it's not overheating causing the problem. These cards only start overheating at 100 to 120 celsius, depending on the card. The problem with a GPU running hot is the what it does to the air around it, and the additional strain it puts on the power supply especially. That will cause problems but not necessarily crashes.
When I got Fallout New Vegas, I had a similar heat problem, but it wasn't my graphics card. It was the draw from the power supply + the heat of the GPU overexerting the power supply and creating a feedback loop... until the PSU would make oscillation sounds and the PC get unstable. Replacing the PSU with a better quality one (not by wattage, but by efficiency) fixed the problem.
If others are getting your problem, especially people with similar computer components to you, it could be bad coding on the game's part. There's lots of ways to write inefficient code. It may be keeping your GPU running at high load for long periods of time. Only fix for that would be getting a better GPU or watching on a patch. A Geforce 430 isn't very good - would be worth getting a better card if you can afford it.
