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IRQL Not Less or Equal problem with two PCI cards

Forum Motherboards & Memory : General Motherboard - IRQL Not Less or Equal problem with two PCI cards

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demaksi   09-20-2008 at 11:23:41 AM

Recently I`ve changed my old motherboard and some other things with:
Biostar TA780GM2+ (integrated Radeon HD3200)
4x512MB DDR2 800MHz
SATA2 HDD Western Digitall
DVD-RW LiteOn, p-ata
I`ve installed Windows XP SP2 and everything worked fine, until I installed drivers for my old Terratec Cinergy 400 TV card and Motorola modem, both PCI cards, and they also worked fine. Then, when I try to restart the system, blue screen appears with IRQL Not Less or Equal error message. I`ve noticed that if I install drivers for only one PCI card, or install both and disable or uninstall drivers for one of them in Device Manager before restarting, then everything works normal.
In Device Manager for modem and tv card there is no conflict, and they are using IRQ20 and IRQ21 resource. My BIOS settings for PCI/PnP are:
Clear NVRAM: NO
Plug & Play O/S: NO
PCI Latency Timer: 64
Allocate IRQ to PCI VGA: YES
Palette Snooping: Disabled
PCI IDE busmaster: Enabled
PCI Resource: most of them between IRQ3 and IRQ15 AVAILABLE
I think it`s something about IRQs, but have no clue how to deal with it.
Please help! thanks

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demaksi   09-20-2008 at 02:43:27 PM
- 0 +

I`ve already used two different memory tests, one from Windows, one from BIOS - Integrated Memory Test (MemTest86), and everything turns up fine!
It only happens when both PCI drivers are installed and Enabled, otherwise everything is perfect, DDR2 memory is brand new, from Kingston.

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Bronze Motherboards badge GhislainG   09-20-2008 at 03:21:59 PM
- 0 +

I agree with you that the issue is IRQ related and that your memory is fine.

Why did you set Plug & Play O/S to NO? Have you tried setting it to YES to see if it would help?

Have you tried swapping the PCI cards to see if moving them to a different PCI slot helps?

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demaksi   09-20-2008 at 04:42:29 PM
- 0 +

Plug & Play O/S to NO - is BIOS default setting, I tried with YES, and it`s still the same, also changing slots change nothing.

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Bronze Motherboards badge GhislainG   09-20-2008 at 05:20:18 PM
- 0 +

Are you using the latest drivers for the Terratec Cinergy 400 TV? What model is that Motorola modem?

Can you live without one of the two PCI cards? Could you use a different modem or an external one (that motherboard has a serial header)?

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demaksi   09-20-2008 at 11:16:58 PM
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For TV card they are the latest, for modem no, but I am using it for the last 7 years and never had any problems on the old one hardware configuration. All I know about that modem is that is Motorola PCI V90 K56.

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Bronze Motherboards badge GhislainG   09-21-2008 at 12:15:26 AM
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Your old hardware probably had more PCI slots and better support for PCI cards. You can't expect your new motherboard to provide the same level of support for old PCI cards, but it supports PCI-E cards. An easy solution might be to buy a U.S. Robotics 56K V.92 USB Faxmodem. You could also buy an internal USR modem for $15.99 http://www.newegg.com/Product/Prod [...] 6825104001, but it might not resolve your issue.

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demaksi   09-21-2008 at 01:05:27 AM
- 0 +

My old motherboard is some 8 years old PCCHIPS model, also just with 2 PCI slots like this one... I`m already getting used to it disable modem in Device Manager before shutting down Windows ;)

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