I just started learning Maya 2013. It I tap the spacebar it switches from a single view to a quad view as the tutorial says. If I hold the space bar I get part of the window under the pop up menu. (first image)

I noticed that the left side of the screen doesn't refresh, and if if I move the mouse while holding down the space bar. On the second attached picture you can see little bits of the Maya window over the menus on the left.

Is there a way to fix this?

BTW, I have an EVGA GTX580 graphics card.