Article ID: 972664 - View products that this article applies to.
When you try to put a computer that is running Windows 7 to sleep, the computer appears to sleep, but then it immediately wakes.
This problem may occur when you use the Start menu, a sleep button on a keyboard, or a Microsoft Windows Media Center remote control.
This problem occurs when you use the following two devices:
Workaround 1 (Recommended)Plug the USB device into an Enhanced Host Controller Interface (EHCI) host controller.
Workaround 2Disable the USB device's ability to wake the computer. To do this, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
When the computer goes to sleep, USB devices turn off. The UHCI host controller interprets this event as if the USB devices were unplugged. Then, the UHCI host controller wakes up the computer.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/841858/ )Description of how to enable the S3 system power state for standby when USB devices are armed for wake
Article ID: 972664 - Last Review: June 18, 2009 - Revision: 1.2
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