In my opinion, matching up the EV700 with your new dream machine lowers the entire value of the system. While I've never experienced the same problem you have now ... I have seen these monitors burn up ... they have a tendency to get "stuck" at a high refresh rate when switching video cards ... even if you manually set the resolution and refresh rate to a low level before installing a new card. I threw one out a few months ago after this happened ... the screen looked like it melted. It only took a few seconds to destroy it ... and there was nothing I could do; the refresh rate couldn't be adjusted until the third boot.
They also have lousy user-display controls, and a relatively high dot pitch. As well as being anything but flat.
While I can't be sure if this is applicable in your case ... GeForce cards sometimes just don't "like" certain monitors, and don't function well with them. You might consider calling a Gateway tech and checking on this issue. Good luck with that!
If I were you, I'd reinstall the video card drivers, and reinstall the monitor drivers. If that doesn't work, I'd start shopping around for a new monitor. Perhaps the signal cable has gotten damaged, or the monitor has a synchronization problem with the new card. Does it do the same thing with another video card?
You could spend under $300.00 and get a 17inch NEC or Micron AG monitor that would make you very happy. I picked up a Micron for my mother from Best Buy for around $250.00 ... it looks great. Easy to use, too ... good corner adjustment, and it is perfectly flat.
Try the 12.40 drivers for the video card, and be sure that you have DirectX 8.
Toejam31
<font color=purple>If there was a reason for everything, having faith would be redundant.</font color=purple>