KB157949 - Slow Keyboard Response on Some Windows 95-Based Computers

Article ID: 157949

Article Last Modified on 11/15/2006

Microsoft Windows 95

This article was previously published under Q157949

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: kbhotfixserver kbqfe kbhardware kbpolicy KB157949