Display Adapters Branch Missing in Device Manager After Upgrade (189235)
The information in this article applies to:
This article was previously published under Q189235 If this article does not describe your hardware-related issue, please see the following Microsoft Web site to view more articles about hardware: SYMPTOMS
After you upgrade Microsoft Windows 95 to Windows 98, the Display Adapters
branch may be missing in Device Manager.
CAUSE
This behavior can occur if your video adapter uses the Nvidia Riva 128
chip set, and is unable to acquire an interrupt request line (IRQ) during
the Plug and Play detection portion of Windows 98 Setup.
RESOLUTION
To resolve this behavior, use either of the following methods to assign an
IRQ to your video adapter:
Method 1
In your computer's Basic Input/Output System (BIOS), enable the Assign IRQ
To VGA option. Note that the BIOS of some computers does not have this
option.
For information about changing settings in the BIOS, see the documentation
included with your computer or motherboard, or consult your computer's
manufacturer.
Method 2
Disable PCI bus IRQ steering in Device Manager. For information about how
to do so, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: 182628
TITLE : How to Disable PCI Bus IRQ Steering in Windows.
For more information about PCI bus IRQ Steering, please see the following
article in the Microsoft Knowledge Base:
ARTICLE-ID: 182604
TITLE : Description of PCI Bus IRQ Steering.
MORE INFORMATION
The Nvidia Riva 128 chip set requires that an IRQ be assigned to it.
| Modification Type: | Major | Last Reviewed: | 7/13/2006 |
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| Keywords: | kbdisplay kbHardware kbprb kbsetup KB189235 |
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