Hi got the same problem started couple of days ago, right after i updated ccc to latest version.
did a rollback and all looked fine but after installing the old drivers the problem returned...
It looks like a windows setting is corrupt and it allows offscreen desktop, my left border is not solid any more and if i print screen i can see the extra useless desktop wallpaper. is there a tweak that "closes the border" like a reg edit that allows manual overwrite of the screenborders?
Aero if out too but i dont really care about that..