If they're on Windows 8, as i suspect they are, its not gpu related. 290's don't cause red screens. Black screens maybe.![]()
I'd be telling whoever it is to look elsewhere for the cause of the red screen. Had a bit of experience with the red screen on Windows 8 myself on a few different pc's.
Was in a hurry earlier so wasn't quite clear but I'm not saying its something that affects all 290s but its definitely a problem with some of them - found a few reports of the exact same symptoms when googling the issue while trying to troubleshoot it.
Previous GPU(s) worked fine in that system and it caused the same problem on another system which had windows 7 on (PC it was in had win7 also). RMA replacement worked fine without the issue while it was in my hands also. (Same card had the blackscreen issue quite badly and the replacement didn't have any of that either while I was testing it hence my previous post where I said I'm not convinced its a software issue).