Black Screen while playing Games

Question

After 5 minutes of playing Amnesia the dark descent in linux version and other games running on wine i get a black screen.

During these days i only installed software from the Ubuntu software center,downloaded some source tar.gz files and edited some personal text files.

Nothing special at all which makes me wonder what is going on with my machine...

These are the only games i have installed (along with GTR2 which i have not tested).I run both games 3 times and got the same result.

OS: Pinguy OS 11.04 (Ubuntu Based)

Kernel: Linux 2.6.38-9-generic (i686)

DE: GNOME 2.32.1

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CPU: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ 2200.33MHz

RAM: 2GB

GPU: nVidia GeForce 240

HD: Seagate 500GB 7200 RPM

Answer 1

Temperature of my GPU was extremely high (67 Celsius on desktop)

Removed case cover,dropped to 57 degrees and lowered the settings of the game.I guess it also because of summer since the whole climate in my country is pretty hot.