Some MicroChannel NIC Cards May Not Start On a Dual Bus System (166422)
The information in this article applies to:
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
This article was previously published under Q166422
IMPORTANT: This article contains information about editing the registry.
Before you edit the registry, make sure you understand how to restore it if
a problem occurs. For information about how to do this, view the "Restoring
the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key"
Help topic in Regedt32.exe.
SYMPTOMS
A MicroChannel network interface card installed in an IBM 520 Server with a
dual PCI and MicroChannel bus will not start properly and lists the
following in the event log:
Event ID: 7000
Source: Service Control Manager
Description: The <name of driver> service failed to start due to the
following error: A device attached to the system is not
functioning.
CAUSE
This may occur if the network card driver's installation routine
incorrectly sets the BusType registry key to 5 (PCI) rather than to 3
(MicroChannel). This key is located in:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\xxxy
\Parameters
NOTE: The above registry key is one path; it has been wrapped for
readability.
BusType:REG_DWORD:value
Where xxx is the driver name and y is the driver instance.
RESOLUTION
WARNING: Using Registry Editor incorrectly can cause serious problems that
may require you to reinstall your operating system. Microsoft cannot
guarantee that problems resulting from the incorrect use of Registry Editor
can be solved. Use Registry Editor at your own risk.
For information about how to edit the registry, view the "Changing Keys
And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and
Delete Information in the Registry" and "Edit Registry Data" Help topics
in Regedt32.exe. Note that you should back up the registry before you edit
it.
- Run Registry Editor (REGEDT32.EXE), find the following subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\xxxy\Paramete
Where xxx is the driver name and y is the driver instance. - Select the Parameters key.
- Find and double-click the following Value Name:
Bustype:REG_DWORD:0x5
- Change the value to 0x3.
- Click OK and quit Registry Editor.
- Shutdown and restart Windows NT.
| Modification Type: | Major | Last Reviewed: | 5/14/2003 |
|---|
| Keywords: | kbprb kbsetup KB166422 |
|---|
|