I have a few players who are unable to get my game to run in full screen.

It should be detecting the current resolution of the monitor, and automatically setting that as the game's resolution, then switching to full screen mode.

It works on my system, and every other system I've tested it on. Also, the majority of other players have no problems.

I guess the first question I have is whether anyone else has encountered a similar problem, and if there are known causes and solutions for this kind of thing?