Installing a Non-Plug and Play Driver for a PCI Device May Cause Problems (325955)

The information in this article applies to:

Microsoft Windows XP Home Edition
Microsoft Windows XP Professional
Microsoft Windows 2000 Professional SP1
Microsoft Windows 2000 Professional SP2
Microsoft Windows 2000 Professional SP3
Microsoft Windows 2000 Server SP1
Microsoft Windows 2000 Server SP2
Microsoft Windows 2000 Server SP3
Microsoft Windows 2000 Advanced Server SP1
Microsoft Windows 2000 Advanced Server SP2
Microsoft Windows 2000 Advanced Server SP3

This article was previously published under Q325955

SYMPTOMS

If you install an older Microsoft Windows NT 4.0 driver for a PCI device that has a Windows 2000 or Windows XP driver currently installed, the resources for the PCI device are reassigned. Reassigning the PCI device's resources to the Windows NT 4.0 driver prevents the Windows 2000 or Windows XP driver from communicating with the device.

CAUSE

The HalAssignSlotResources function that is called by the older driver does not determine whether a Plug and Play device driver is already servicing the device before programming the PCI device.

WORKAROUND

Do not install or start an older non-Plug and Play driver for a PCI device that is already being controlled by a Plug and Play driver.

RESOLUTION

Window 2000

To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to Obtain the Latest Windows 2000 Service Pack

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.

Modification Type:	Minor	Last Reviewed:	11/7/2003
Keywords:	kbOSWin2000fix kbWin2kSP4fix kbbug kbpending KB325955