If you have that resulution, I think I know why it is cut off.
I have the same resolution and it is just covering the whole screen in height. The "problem" you have is caused by having the object size too big.
If it is this, you can change it by right clicking on the desktop, choosing the "Screen resultion" option. When it is opened there is a link that says something about making text or other object bigger and smaller. Click that and you get to a window with two radio buttons. You probably have the 125% one checked, which means that the window edges also are getting bigger, taking up screen space. Change this to the 100% option instead and follow the instructions on the screen(if any).
This is the thing I can think of.
Hope it helps.