Windows 8

While typing I hit a button somewhere and now everything has been reduced to where I can't read it. This is a new computer, I have searched fore the answer but can't find what happened.

I should add that I was using IE. When using Chrome, everything is normal size.

I am still working on a resolution to my Toshiba that I posted several days. Some success but not as it was. Will post when I have more info.