Grahpic Error on Server Select screen




I have recently built a new PC for playing CoH with the girlfriend, and I get this problem. It occurs when I log into my account, choose a server, then back up to the server selection screen under the "heroes" screen. If I back up after choosing to create a praetorian or villian, this does not happen (as it backs up to different screens?) This doesn't happen on my machine at all, though they aren't similair machines.

Does anyone have any knowledge on how to fix this? Any help would be greatly appreciated!