Event ID 28 from 8042prt on IBM PS/2 and Some PC Servers (147346)
The information in this article applies to:
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
This article was previously published under Q147346 SYMPTOMS
Windows NT logs the following error in the System Log (as seen in the Event
Viewer) following a reboot:
Source: 8042prt
Type: Information
Category: None
Description: Could not successfully write the Controller Command Byte
for the i8042.
CAUSE
The Windows NT initialization routine reads the Controller Command Byte
(CCB) from the i8042prt, changes some CCB bits, writes it back, then
verifies it. If the verification does not pass, the error is posted in the
System Log. The keyboard driver also logs this error when it encounters
glitches in operation.
This is by design and a valuable tool to determine problems when the
keyboard actually stops working.
RESOLUTION
This is an informational message only and not an indication of a problem
with the keyboard port.
STATUS
Microsoft has confirmed this to be a problem in Windows NT version 3.5 and
3.51 We are researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.
| Modification Type: | Major | Last Reviewed: | 12/16/2003 |
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| Keywords: | kbHardware kbhw KB147346 |
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