Article ID: 323937 - Last Review: February 1, 2007 - Revision: 3.2

Windows 2000 Stops Responding After a Surprise Removal of a USB OHCI Controller

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This article was previously published under Q323937

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SYMPTOMS

When you hot unplug an OHCI USB controller to which one or more USB-based devices are connected, you may receive an error message on a blue screen, and your computer may stop responding (hang).

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CAUSE

This problem may occur when the Openhci.sys host controller driver tries to use invalid memory locations in its surprise remove (IRP_MN_SURPRISE_REMOVE) code path.

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To work around this problem, eject the controller by using the Hotplug tool on the taskbar. Note that if you hot plug-in the controller device again, it may not be redetected by the system. If this occurs, restart your computer.

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
This problem was corrected in Microsoft Windows XP.

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