Article ID: 310922 - View products that this article applies to.
This article was previously published under Q310922
Your computer may stop responding (hang) during the shutdown process if Universal Serial Bus (USB) legacy support is enabled in the computer's basic input/output system (BIOS), and if the USB host controller resources that are assigned by Windows differ from those that are designated in the BIOS.
Windows sets the USB host controller to legacy support mode during the shutdown process, but cannot restore the BIOS-designated resource settings. If the current input/output (I/O) port settings differ from the BIOS settings, the device is inaccessible and causes the computer to hang.
Although your computer's BIOS may include an option to disable USB legacy support, doing so may cause additional problems. Note that USB input devices, such as a keyboard or mouse, require USB legacy emulation to work correctly in Real mode (MS-DOS) and Safe mode. For additional information, see the "References" section of this article. As an alternative, you can configure the USB host controller's resource settings to match those that are assigned by the BIOS.
Setting the USB Host Controller to Use the BIOS Settings
Viewing the USB Host Controller Settings
(http://support.microsoft.com/kb/285122/EN-US/ )How to Start Device Manager in Windows 98 and Windows Me
Setting the USB Host Controller to Use Automatic Settings
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
There are some problems that may require you to manually assign resources to the USB host controller. For additional information, click the appropriate article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/263764/EN-US/ )'Fatal Exception' Error Message or USB Devices May Not Work After You Insert PC Card
310923For additional information about USB legacy support, click the article number below to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/310923/EN-US/ )USB Keyboard or Mouse May Not Work After You Restart Your Computer in MS-DOS Mode
250635For additional information if the computer hangs during the shutdown process, click the article numbers below to view the articles in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/250635/EN-US/ )Windows 98: Computer Problems with USB Legacy Support
(http://support.microsoft.com/kb/238096/EN-US/ )Problems Shutting Down Windows 98 Second Edition
239887You can typically enable or disable USB legacy support in your computer's BIOS settings if your computer's BIOS supports it. For information about whether your hardware supports USB legacy emulation, view the documentation that is included with your computer, or contact your hardware manufacturer.
(http://support.microsoft.com/kb/239887/EN-US/ )Windows 98 Second Edition Shutdown Supplement
Article ID: 310922 - Last Review: January 31, 2007 - Revision: 1.3
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