I've got an LG R500 Notebook that has started crashing. It usually crashes in Windows (Vista, all updates installed) when playing a game. The symptom is that the screen goes dark and then the notebook shuts down. I suspect Windows is forcing hibernation due to overheating.
The other day something similar happened in Linux: while playing a video the screen switched to console mode and displayed an error about an ACPI fan problem.
I suspect my video card is overheating.
The notebook is just out of warranty. Any tips on how I can resolve/further diagnose this? My usual approach with a desktop would be to replace parts, but that's harder here. I'd hate to have to buy a whole new computer because the video card is toast in the notebook.