I may have just solved my own problem!
1. Control Panel, Display, Screen Resolution, Advanced Settings, Adapter, List All Modes, select 1440 by 900, True Color (32 bit), 60 Hertz, OK
2. Works so far, hasn't changed yet.
Curious why changing it in Catalyst didn't affect a permanent change?
Why it changed it the first place is beyond me!
MODERATOR NOTE: I am glad to see you have resolved your issue. To help keep this post on topic and help other with a similar issue, I am locking this thread.