KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q157949: Slow Keyboard Response on Some Windows 95-Based Computers

Article: Q157949
Product(s): Microsoft Windows 95.x Retail Product
Version(s): 
Operating System(s): 
Keyword(s): kbhw kbpolicy win95 kbHardwarekbfixlist
Last Modified: 25-MAR-2002

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows 95 
-------------------------------------------------------------------------------

SYMPTOMS
========

You may experience slow keyboard response on some Windows 95-based computers.
When you are typing, characters may not appear on the screen for 3-4 seconds.
The problem persists until you restart your computer.

CAUSE
=====

This issue occurs due to a timeout set by Vpic.vxd (the Programmable Interrupt
Controller virtual device) that is being canceled by Lpt.vxd.

RESOLUTION
==========


STATUS
======

This problem no longer occurs in Windows 98. To resolve this problem, install
the current version of Windows. For information about the current version of
Windows, visit http://www.microsoft.com/windows.

MORE INFORMATION
================

This problem is often observed with Microsoft Office programs.

Computer models with which this problem has been observed include:

- Compaq Deskpro/Prolinea Series 172029-00x

- Compaq Prolinea 5100e (Compaq Designed ASIC)

- Compaq Prolinea E Series FDC37C665GT (SMC Super I/O Chip)

- Computers with Jade P133 motherboards

This problem has also been reported to occur on certain Toshiba computers that
have the ECP port enabled. The problem has been reported on the following
computers:

- Toshiba T2450CT

- Toshiba T400CD

- Toshiba T430CD

- Toshiba Tecra 700 CT

This problem has also been reported to occur if the port was configured for high
speed bi-directional operation in the CMOS. You may be able to resolve this
problem by setting the port to "normal" in the CMOS.


Additional query words: word95 word97 xl95 xl97

======================================================================
Keywords          : kbhw kbpolicy win95 kbHardware kbfixlist
Technology        : kbWin95search kbZNotKeyword3
Version           : :

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.