I had two monitors set up that were split from the DVI in the back of the desktop. I just added a third monitor using a USB to VGA external adapter. It worked just fine for several hours, and then one of my original two screens turned yellow. I swapped them on the splitter and the yellow monitor would swap back and forth depending on which side of the splitter it was one. I then switched out the splitter thinking that was the problem. Didn't work.
I had also added 2 GB of memory when I added the third monitor.
Any suggestions? Can the current Video card not handle the original two moniors now?