Hi Daniel,
If you are able to run 1024x768, that's the resolution you have to use.
You said that your Cumulus display is wrong, maybe you could investigate
your video card. A bad driver could cause this problem or a "broken" video card.
I had a problem with a 8500GT lately, all seems to work ok, but not with windows7
aero style, after having formatted my Pc twice I've changed that faulty video card
and all is ok now... but I lost 2 days with that!
Regards,
Jacques