I put a USB2 board in my daughter's PCI bus and it crashed the video.
I took the new USB card out and the video still didn't work, but after
I turned the computer off and on a few times it started working again.

Then I put the USB2 board into my own computer, to see if it would
crash the video. It didn't. My computer just booted right up and
said it detected new hardware, and the new hardware was now ready to
use. (Jeez, I love XP.)

My daughter's computer and mine are identical. I built them both
myself. Same parts list. Her video card, Matrox Millennium G550,
crapped out after only 2 years service. Figuring it was just a fluke,
I replaced it with another of the same (about $130). That was only a
few months ago, and it's been working fine. Now I put in a PCI card
and the video crashes again.

This time it recovers, but why did it crash? Mine didn't crash. Do
you suppose Matrox is having a QC problem? Do you suppose my
daughter's motherboard (Intel D845) has a flaw? Am I missing
something?

Why would a PCI card crash an AGP video? Help?

It would appear the most useful thing you could do would be to see if your
daughter's video card works in your computer and if your video card works in
your daughter's computer.
If your daughter's card works in your computer then the problem is either
her motherboard or the power supply. Failing or inadequate power supplies
cause all kinds of problems with hardware that is actually working properly.
Again by swapping parts, if you are so inclined, you can identify the
problem.

On Mon, 03 Apr 2006 03:12:43 GMT, "bmoag" <aetoo@hotmail.com> wrote:

Thanks for the suggestions, bmoag. Actually I've been through that
before. The first time her videocard crashed, a few months ago, the
first thing I did was swap power supplies. No effect. The only thing
left that I could easily swap was the videocard. That fixed hers and
hosed mine. So I bought her a new videocard, and it's been working
fine, till I put in this PCI card. Then, no video. Beep code says
video configuration failure. Take out the PCI card, video comes back.
Put PCI card into my computer -- no problems.

A motherboard ain't easy to swap. Damnation.

Problem solved.

I hang my head in shame.

I went back to my daughter's house to make another try. Same baffling
results. I was going around wiggling things looking for loose
connections. I put my thumbs on the videocard and gave a firm push --
and it popped in another quarter inch. Well, not that far. Oh dear,
I says, did I do that? Then I turned it back on and everything came
right up nice as pie.

Sometimes when you get to thinking you're pretty hotsy-totsy with
computers, it's good to see that you can still leave a board unseated,
and eat a little humbleberry pie. It's delicious.