Vertical lines on monitor

[suzyq]

I am experiencing vertical flickering lines on my monitor.  When I move the mouse around it will sometimes help clear it up.  It seems to be getting worse with time.  I have updated my video card and my refresh rate and cables are good.  I tried switching to a new monitor and the problem is still there.  Does anyone have any idea what else I can try?  Thanks

[patio]

With all power unplugged open the case and remove and re-seat the vid card.
Leave the case open for now so you can make sure the vid card fan works properly on power up.
If this still persists as you have tried 2 monitors already the card may be failing.