So when I open a file that's say, 100px x 100px, usually the PS window would be gray except for a 100pxX100px white square, which is, of course, the stage. However, now instead of the gray outer region (whatever that's called), it is showing as if it was transparent. When I drag the doc window to resize it, the stage is "duplicated" randomly while the transparent outer region continues to grow. I've attached a screen shot to help. The white block below is the stage. The rest is inaccessible. Also, if I use the Type tool, the screen flickers to its inverse with each keystroke. Anyone got an idea on this? I'd appreciate the help!
Update your graphics driver.
Thank you very much. That seems to be the trick.