I'm having problems with a display rendering some text as in the attached image. It happens randomly and in all applications (Word docs, websites, etc.). First we swapped displays to make sure it wasn't the display, then we replaced the video card, but the problem has persisted.
Has anyone seen this type of video issue before? What is causing this and how can it be resolved?
Dell Optiplex 980
Win 7 x64
ATI Radeon 3400 series display adapter w/DVI splitter connected to one display