Acer h233h "stubby" images

my acer wide screen monitor does not display with equal height and width.
that is, when i draw a square with M$ paint, using the rectangle tool and the shift key, i get a shoebox-on-it's side image.


in normal usage, this means short stubby images... no tall skinny people.
it's not toooo bad; maybe 100 x 115 pixels ratio.

any thoughts?

That display has a native resolution of 1920 x 1080. Go to your display properties and make sure this is the set resolution. It's probably not set correctly.