Yeah, right click on your desktop, go to properties,click on the tab "settings", and check the settings on that monitor. If its a graphic problem, go to your graphics card control center and change that angle at which it is displaying. try this. if not, tell us.
anyways hees not an LCD, but i will check for the thing aout right clicking, i looked into it once but didnt go very far. do this for me unless you know what im talking about, under the setting tab, look the numer on the left is bigger than the one on the right, right? well on his the one on the left is smaller. i figured its set to widescreen somehow? anyways i figured the monitor didnt know what to do so it just turned sideways...haha