Computer with USB Devices Hangs

• Microsoft Windows 95 OEM Service Release version 2.1

SYMPTOMS

When you run Windows 95 OEM Service Release version 2.1 on a computer equipped with a Universal Serial Bus (USB) host adapter, the computer may stop responding (hang) in the following situations:

• If you disable the USB Root Hub device in Device Manager while PC Card sockets are enabled, the computer may hang or a "Fatal Exception 0E" error message may occur.



• If you suspended and resume the computer while a Logitech USB mouse is attached, the computer may never finish the resume operation.



• If you rapidly plug and unplug an ALPS USB game pad, the computer may hang or display a fatal exception error message on a blue screen.



• On a Toshiba portable computer equipped with USB support, if the PC Card controller is set to CardBus mode, and the computer is docked to a port replicator, the computer may hang when you eject it (undock) from the port replicator.

RESOLUTION

This issue is resolved by the following updated file for Windows 95 OEM Service Release 2.1, and later versions of this file:

OPENHCI.SYS version 4.03.1214 dated 7/17/97 31,248 bytes

CBSS.VXD version 4.00.1117 dated 6/13/97 16,249 bytes

STATUS

Microsoft has confirmed this to be a problem in Microsoft Windows 95 OEM Service Release 2.1. An update to address this problem is now available, but is not fully regression tested and should be applied only to computers experiencing this specific problem. Unless you are severely impacted by this specific problem, Microsoft does not recommend implementing this update at this time. Contact Microsoft Technical Support for additional information about the availability of this update.

This issue is resolved in Microsoft Windows 98.

MORE INFORMATION

For additional information about issues resolved by updates to these components, please see the following articles in the Microsoft Knowledge Base:

Q181499 USB Over Current Condition Causes Windows 95 Hang

Q164225 Poor Data Transfer with CardBus Card in Docking Station

Q164224 Inserting PC Card in Dock with CardBus Card May Cause Reboot

Q164223 PC Cards May Not Be Recognized in Docking Station

Q164222 CardBus Card in Docking Station May Not Be Configured

Q163938 Inserting Multifunction PC Card May Hang Computer

Q159543 Intel ProShare PC Card May Hang Computer

Q159492 PC Card Device Not Enumerated When Reinserted

Q161020 Implementing Windows 95 Updates

Additional query words: 95

Keywords : kbhw osr2 win95
Version : WINDOWS:95
Platform : WINDOWS
Issue type :