I have a Viewwsoic VE155 that I just plugged into my computer and the screen says out of range. I took my viewsonic VX910 off because overnight it decided not to come on at all. Can you help me?
There are known problems with a generation of Viewsonic monitors failing to power up*.
The out of range thing is a different issue -- if the VE155 is a 15 and the VX910 if larger the resolution setting will be too high. Restart Windows in Safe Mode (press F8 just as Windows is about to start).