Oh, that's a very easy fix. You don't need to send it off to get formatted! haha
Your video card driver got corrupted somehow, and that's causing the jerky scrolling. Go into Device Manager and right click on your video card driver and click uninstall. Then hit the refresh button and install new drivers from the cd or internet.
I'm not sure how computer literate you are, so if those directions are too vague let me know and I'll be more specific (with screen shots if needed).