"Weird wave", do you mean like a continuous jitter, side to side?
That would be electrical interference. If so, the frequency of the jitter will change when you change refresh rates.
Do you have any electrical motors, like an AC fan nearby, or on the same circuit? Do you have another monitor next to the one with the problem? Did you move a power cord parallel to the video cable? If any of these is true then move the item further away.
<b>56K, slow and steady does not win the race on internet!</b><P ID="edit"><FONT SIZE=-1><EM>Edited by phsstpok on 06/16/03 09:32 PM.</EM></FONT></P>