Edward, I know little about Windows but why are you'd/loading to a USB drive?
http://www.adobe.com/nz/downloads/updates.html
The above is the d/load site for perpetual licenses. But really if you have the current 5.7.1 version d/loading again won't help.
Is it just the monitor?? Is it calibrated?? Do you get the same on another screen/computer???
