It could be driver or windows configuration or videocard problem. If you have some video driver entry in file properties menu, then this may cause mode changes.
Does your monitor blink when windows is in safe mode? Can you test your monitor with another PC?
Othervise I'm in same boat - I don't like LCDs (and can't look at LCD screen without getting headache anyway
You may look at bigger CRT screens; Viewsonic and Philips produce some 21"-22" models (at least these are on sale here in Estonia).
Here are also some 19" Samsungs available, but unfortunately they seem being crap (2-3 years ago they had good build quality, not anymore) - my co-worker bought one (for photo editing) but was bitterly disappointed; monitor has serious focus problems and warranty service couldn't repair this thing.