Welcome to Computer Hope, azippererjr!
Sounds like your screen resolution got changed. Try this:
a) Click the Start Button>Control Panel>Appearance and Personalization>Personalization, and then click Display Settings.
b) Move the slider (probably left, in your case) to select the resolution that you want.
It's a good idea to select the native resolution of your monitor if the monitor is an LCD type. Just look up the specs for your monitor in the literature that came with it or Google your monitor make and model number.
Best of luck and let us know how you make out.