I'm experiencing a full system crash when playing Starcraft 2. I've had this occur at various points both in game and in menu.

Video will halt (black screen, monitor in to power saver mode) sound will continue for a short period of time and begin looping. Hard reset is required to reboot the computer.

I've tried:
- Updating ATI video drivers to the latest version
- Disabling CrossfireX
- Selective Startup

No success thus far.

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