miketoy

While playing a DVD connected to a TV (displays synced), it suddenly stopped with mezzoforte fans, screen froze. Note: we had around 35°C these days. After a restart with ctrl-cmd-power, it boots up and freezes frequently -- sometimes with a black screen, showing only a little something of gray in the bottom, sometimes with the last screen without mouse pointer.

technt77

I'd say the heat could definitely be affecting your performance. We've had similar issues with our DVD player as well.