This morning I attempted to play a little D2 before work, and when I got to the character selection screen, I noticed that the cursor would only move around in the top left quarter of the screen. It's like there's an invisible fence corralling my cursor. I can't even select a character, since it's just beyond the reach of my mouse. The only thing that's changed since yesterday when it was working as normal, is a graphics driver update that I installed before turning off the pc.