What could be causing weird JPEG display artifacts on my Windows 2000 computer?

[DaveC426913]

I'm running Windows 2000 on an older computer. I'm getting these artifacts on images (see attached). It only occurs on JPEGs, nowhere else. It does *not* occur on screen, or even in GIFs.

They are randomly appearing - simply refreshing my browser is enough to get a different arrangement. But scrolling the screen does not alter them (eg. if I scroll a JPEG off-screen and back on, the artifacts act as if they are part of the image, remaining in-place.)

This is not a video card problem, as I have just replaced that.


Ever seen such a thing? Some sort of JPEG display malfunction?

 

[DaveC426913]

I would probably accuse the JPEG decoder. Try another program to view that JPEG.

Well, the program I'm viewing the JPG with is Internet Explorer. I just realized, it is IE-specific - it is NOT occurring in Firefox!

I also found your statement:

"JPEGs, nowhere else. It does not occur on screen"

a bit confusing. It doesn't occur on screen, but it occurs on JPEG. Where exactly is this "JPEG"?

I meant, it does not occur randomly all across my screen, as I would expect it would if it were a video card artifact. It occurs only in JPEG images on screen.

 

[mezarashi]

Well, the program I'm viewing the JPG with is Internet Explorer. I just realized, it is IE-specific - it is NOT occurring in Firefox!

See how evil the Microsoft empire is? ;)

 

[dduardo]

DaveC426913, I think you solved your own problem.