Force reboot when running C&C: RA3 on iMac 27" (mid-2011)

[Hog Milanese]

Okay, so I just got this iMac a few days ago, and it has been great.

I purchased/downloaded Command & Conquer: Red Alert 3 from Mac Game Store. Once installed and patched up, I launched the app and began to play (after adjusting the video/graphics settings in the game, they were set ridiculously low and for 800x600).

I've played the game twice now, and each time - mid game - the Mac just all of a sudden reboots. It doesn't seem to be triggered by any particular action in the game, it is randomly timed.

Any ideas?

P.S. video card is AMD Radeon 6970 1GB

 

[Hog Milanese]

As a follow-up, I ran the Apple Hardware Test and everything checked out OK.

 

[Hog Milanese]

Anyone have any ideas?

Could it be the graphics settings are too high, forcing a hard reset?