Author Topic: Changing IRQ assignments in Win2000 Pro (Read 264 times)

Wanker · « **on:** July 13, 2002, 10:14:42 AM »

I built a computer for my Mom and it just so happens that the SB Live, USR v.92 internal modem and her HP scanner are all sharing IRQ 11.

She's having some intermittant problems with her scanner locking up midway during a scan, and one of the possible problems is that the scanner shouldn't be sharing an IRQ, according to what HP tech support told her.

The device manager inside Win 2000 Pro won't let me change the IRQ setting for those devices, so am I looking at hard coding the IRQ's in the BIOS, or is there somewhere else in Win2000 where I can re-assign the IRQ?

Thanks in advance.

Skuzzy · « **Reply #1 on:** July 13, 2002, 11:26:51 AM »

You have 2 options banana.

1) You can move the cards around in the PCI slots and see if that will cure it. Taking care to remove the hardware drivers for the card, BEFORE you shut down to move them.

2) As above, but trying to manually allocate the IRQ's in the BIOS first.

To be successful at either attempt, you will need to know what PCI slots are hardwired to share interrupts.

Good luck.

bloom25 · « **Reply #2 on:** July 13, 2002, 05:55:12 PM »

What type of scanner is this? (SCSI???)

If ACPI was enabled when you installed Win2k you will not be able to do anything with the IRQs. To be honest, Win2k is best if you leave ACPI on (which is the default install). Win2k is not like Windows ME, sharing interrupts typically results in no problems at all.

Wanker · « **Reply #3 on:** July 13, 2002, 08:43:36 PM »

Well, I got it work by re-installing the driver for ACPI, then calling it a "Standard PC". Doing this allowed me to set the IRQ's in the BIOS. Now I have the USB controller on it's own IRQ, as well as the other devices. So far, so good.

Bloom, it's a USB scanner.

Thanks for the replies, gents.