Microsoft KB Archive/185751

= Err: The System Has Not Enabled IO Address Mapping... =

Article ID: 185751

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q185751



SUMMARY


SYMPTOMS
The following message may appear when installing an Intel EtherExpress Pro 100B Ethernet adapter (or other PCI cards) into a system running Microsoft Windows NT version 3.51 or 4.0:

The system has not enabled IO address mapping for the device you have

installed. Please try moving the adapter to another PCI slot or update

the system BIOS.



CAUSE
This problem has been shown to occur on computers with a Phoenix BIOS when the "Plug and Play OS" BIOS setting is set to Yes.

If the BIOS setting is changed to Yes after the driver has been installed and was working correctly, the following error message will appear in the system log and functionality will cease:

  Event 5003 E100B1: Could not find an adapter

Many computers are loaded with Microsoft Windows 95 from the manufacturer and this setting of Yes is correct for that operating system. Users who subsequently want to load Windows NT but who fail to change the setting may encounter this error.



RESOLUTION
To resolve this problem, change the BIOS setting to No.

Keywords: kbprb KB185751

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