Try to identify this video artifact!

[doctorcilantro]

Does anyone have a clue what this artifact is?:

A horizontal

ripple (stretching across the screen left to right) traveling from the

bottom of the screen to the top. Happens at random times; does not have

to be action shot but seems to happen only when watching video.

This would occur on both DVI & VGA connection.

Using

a DFI NF3 w/ Gigabyte 6600 via VGA. Machine is oc'd 95mHz but prime

& memtest stable. Card is no oc'd. Display is a 32" Olevia LCD.

Driver is the 78.03.

Thoughts:

This occurs with DVD video

as well as .avi etc. LOTR looks really good except for this @#$@%#

ripple! I was getting a lot of tearing and activated the vettical sync

to be Always On and the tearing went away....the picture became so much

more stable. The ripple, however, remains.

I need to test with a standalone DVD player on the same circuit as everything else.

Try a different driver.

I am running FWrites on and 8x AGP in the bios. Don't know what the aperture is set at.

I haven't tried to shut down some processes yet, but I think I set Hardware Accelration down a notch.

I

will make a definitive test tongiht using J. River Media Center/Nvidia

DVD decoder(VMR9) and using Zoom Play Pro/Dscaler5(VMR9).

I

noticed this artifact on both DVI and VGA, quality seemed the same and

I could achieve the native 1:1 pixel ratio with VGA so I stuck with it.

I have Klispch RF-7's pretty close to the LCD. (see link in sig).

I

tipped one in real close while playing a dvd and didn't see any effects

on the monitor, but they are shielded anyway: "The new Reference Series

flagships 1.75" titanium dome compression driver is coupled to an 8"

square Tractrix® Horn and powered by an unusually large, video-shielded

22oz. magnet."

I know the artifact occurs while audio components are on but have to check about when turned off.

The

circuit is not overload because the electrician was here and I was

pulling 4 amps on a 15amp circuit with everything on. There is no

dimmer in the room, but maybe in the other room which IS on the same

15amp curcuit.

I really want to get rid of this artifact because it is driving me CRAZY.

thanks for all your help everyone.

dR. C

[TheEAR]

First off try with any analog CRT monitor.If you get the same visible artifact the problem is the video card.A memory chip is faulty,RMA the card.Did you try playing games,any artifacts. You know what,download 3Dmark2005 from Futuremark.com.It pushes your video card and CPU to 100%,if you have any motherboard or PSU instability it will crash.Download it install and run the benchmark,look for any video artifacting.If you see any,your video card has problems.

If with a CRT you do not see any artifacts,the LCD is the guilty one.Or try another PC with your monitor.