Guild Wars 2

Black Lion Trading: I bring up the black lion trader and it comes up as blue and green squares. I have to log out and log back in to sometimes get it back to normal.

Characters: Some npcs will come up with the same blue /green effect

World: Infinite walls will cause me to basically experience epilepsy.

Whats wrong with my game?

It sounds like a corrupt graphics driver. Try to uninstall your existing drivers, run the manufacturer cleanup utility to remove any traces of the driver, download and install the newest drivers for your GPU/OS.

Or if you need help with getting links to those utilities and drivers:

• What graphics card are you using?
• What Operating System/-bit are you using?
  ex. “AMD Radeon 5750 HD, Windows 7 64-Bit”