HELP! MY SCREEN IS ON PERMANENT ZOOM AND WILL NOT COME OUT OF 16

I cannot see my whole screen at one time. I am seeing about 25% and the font is very large. I work on my computer and am getting very behind with today's assignments. It is also like this when not on the internet. Can anyone help me zoom out? My 3 year old decided to play with buttons and it hasn't been the same since! I have searched the web and have tried F11, to no avail. Help.. I am getting very frustrated! Thanks! Diana

try going onto Start -> all programs -> accessories -> accessability -> magnifier and reply to see if that works

Sorry. That didn't work. I found the site but it wasn't activated, and was not causing my problem.