I have both my monitor and pc connected to a APC 800 ups which all worked well then I noticed my monitor wouldn't switch on (No power light) after spending quite a while jiggling cables I got it going but the problem got worse.
Finally I connected the monitor straight back into the power socket bypassing the ups but this didn't help.
Today it took me nearly an hour to get the monitor to switch on and the resolution was all wrong.
Here's what I've found out so far....
It makes no difference if the monitor is running through the ups, mains or just plugged in and not connected to computer.
Sometimes it will switch on then shut down.
Updated graphics driver but made no difference.
Changed resolution from 1024x768 to 1440x900 which maybe wrong but at least its not huge and blurry.
Before I start looking at a new monitor I was wondering if there was anything I'd missed or is it simply on the way out.