Electrostatic Discharge Disables Devices Plugged In To USB Hub[win98x]
NOTE: Check the online KB at http://www.microsoft.com/support for updates to this Q article since the last modified date.
ID: Q236934 CREATED: 08-JUL-1999 MODIFIED: 10-AUG-1999
WINDOWS:
WINDOWS
PUBLIC | win98 win98se
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The information in this article applies to:
- Microsoft Windows 98
- Microsoft Windows 98 Second Edition
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SYMPTOMS
========
When you use Universal Serial Bus (USB) devices connected to an external USB
hub, one or more devices plugged into the hub may suddenly stop working. This
problem is more likely to occur with external USB hubs that are powered by an
external power source (self-powered) than with USB hubs that are powered by the
USB bus itself (bus-powered). This problem does not occur with devices that are
plugged directly into the "root" hub built into the computer itself.
CAUSE
=====
This problem may occur if the USB hub receives an electrostatic discharge (ESD,
also known as a static electric shock). When an electrostatic discharge occurs,
Windows may be unable to properly restart an external USB hub to recover from
the error.
RESOLUTION
==========
A supported fix that corrects this problem is now available from Microsoft, but
it has not been fully regression tested and should be applied only to systems
experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the
fix. For a complete list of Microsoft Product Support Services phone numbers and
information on support costs, please go to the following address on the World
Wide Web:
http://www.microsoft.com/support/supportnet/overview/overview.asp
The English version of this fix should have the following file attributes or
later:
Date Time Version Size File name Platform
---------------------------------------------------------------
08/13/99 3:25pm 4.10.2223 36,672 Usbhub.sys Win98 SE
NOTE: If this product was already installed on your computer when you purchased
it from the Original Equipment Manufacturer (OEM) and you need this fix, please
call the Pay Per Incident number listed on the above Web site. If you contact
Microsoft to obtain this fix, and if it is determined that you only require the
fix you requested, no fee will be charged. However, if you request additional
technical support, and if your no-charge technical support period has expired,
or if you are not eligible for standard no-charge technical support, you may be
charged a non-refundable fee.
For more information about eligibility for no-charge technical support, see the
following article in the Microsoft Knowledge Base:
Q154871 Determining If You Are Eligible for No-Charge Technical Support
WORKAROUND
==========
To work around this problem after it occurs, unplug the external USB hub from
the computer or upstream hub, and then reconnect the external USB hub. The hub
is then redetected and its functionality restored.
STATUS
======
Microsoft has confirmed this to be a problem in Windows 98 and Windows 98 Second
Edition.
Manual:
Run the file 236934UP.EXE to install this update.
Knowledge Base Article
======================
For the full contents of the article for this hotfix, visit
http://www.microsoft.com/kb/ and query the Knowledge Base for the
title listed at the top of this document.
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Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.