When XP came out, microsoft didn't let us *easily* manually change IRQs, it is called, "ACPI" or something like that. The only way I know to do this without resorting to strange registry tweaks and loss of shutdown via software is to remove cards and replace and reboot.

Depending on how many PCI cards and slots you have, this can be easy or it can take some time.

Shut down the PC and remove all cards temporarily.

Boot the PC and let XP cleanup.

Shut down again and install *only* the soundcard first. We are looking for the best possible PCI slot here, the "master" -- which is typically located closest to the video card slot on most mobos, though not always. I'd start there, though.

Now boot up the PC with just the soundcard in there and go through the hardware install. Then check the IRQ table.

If card is pristine, all by itself, then you can start adding the other cards - one at a time and checking IRQs between bootups.

**Websearch engine, find "PCI Latency Checker" download and run it, see what it reports.

***A PC not on the web may be suffering from very old windows code due to no windows updates. There have been key updates made to help solve these problems and you should investigate that at windows updates site.


--Mac

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