My display 'shakes' over 60Hz

[reboos]

I have a ATI VIVO DDR 64mb card. At no matter what resolution, if my refresh rate is above 60HZ the screen seems to 'shake'. I tried replacing the monitor with a updated 19in CRT Sony model and it still does it. I tried installing new vid card drivers. I don;t have a spare vid card to change it out, but I don't know if this should be my next step? Or could it be I need a larger power supply? The motherboard is a EPoX Pentium 4 with a Intel 845d chipset. Is there some irregularity that I am unaware of. I searched new drivers for everything and nothing works. Basically I want to know if I should go buy a new vid card. Thanks.

 

[aswedc]

I'm no expert, but this sound like some sort of electrical interference to me, and would be a problem that lies with the monitor, not the video card. Try turning off everything unnecessary around the computer.

 

[Giscardo]

could also be the wiring in your house, electric components near your computer, or power lines outside your house. I moved my system tothe living room and ever since, the image has been jittering once in a while. It goes away and comes as it pleases. But all the circuit breakers and meters are right outside on the other side of the wall from this monitor so that's what i think is causing it.

 

[PCHPlayer]

My monitor "shakes" when it is running at 75Hz and the washing machine goes into the spin cycle. It's annoying, but it only lasts a few minutes. The washing machine is about 10 feet from my monitor (through 2 walls).