The computer says that the video card's drivers are still there, but I
don't know what thing you do to make the motherboard switch the video
signal to the AGP card's output instead of the P4 (2G) onboard video
output. I had had a service guy do this a year ago or so for me.
Needless to say, I am impressed by the unmitigated nastiness of the
USB 2.0 card.

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Clarification of Question by scotttygett-ga on 23 Mar 2005 09:08 PST

I am closing this question, but the answerers gave some very
worthwhile advice, especially as to how the USB 2.0 card could cause
the graphics card to malfunction. Hopefully the latest drivers will
save on figuring out "interrupt vectors," so my advice for someone
going down this road would be to download the latest driver for the
USB 2.0 card before installing it, I suppose.

I would advise checking your BIOS settings. Changing from the AGP card
to the onboard video is usually set from there.

If that's the thing where you push "delete" as it's cranking up; I did
that, and then changed the thing that looked like it qualified, a
"pallette snoop" setting, but after a few minutes of waiting, it was
clear nothing had happened.

Incidentally, I'm on XP with a GEForce4 card and 512 DDR.

usually you can right click on the desktop and fgo to properties, and
then go to the advanced tab, and then click on advanced, and it might
let you change the output in there, other than that, the only other
way is in bios

Well, here's the result:

I forgot that I had forgotten to actually load the latest driver I'd
downloaded, and having someone suggest BIOS gave me the courage to
monkey with that, though fruitlessly.

What I discovered was that computers can tell when they're being
looked at, so turning it off and then on after moving the plugs around
after loading the new driver seems to have done it. Oh, and some
praying.

Are either of you friendly folks official answerers?

If not, I guess I'm closing this one.

Hello,
Probably may be a conflict with the Interrupt vector location. u'r usb
may be having the same interrupt vector location as u'r graphics card.
Try to manually set the location. It might solve the problem.

This same problem had once occured with usb2.0 and someother device's
location for a friend of mine. changing the setting helped it.

with Best Regards,