What is 'graphical chaos'?
If the menu bar / interface at the bottom of the screen has been replaced with three thin lines (red, blue and yellow, for health, mana and stamina), move the cursor over the lines and right click to toggle back to the full interface.
If that isn't the issue, there are a couple graphical problems described in the readme.txt file which can be fixed by running the configuration program and checking the 'alpha bit' option.