Can't turn off my computer?
Whenever we use the start button to shut down, it stops at the screen that says, "Windows is shutting down". It used to automatically shut down, but now we have to push the power button and hold it for 6-7 seconds to get it to shut down.
Also, it won't restart. We have to shut down as described above, and reboot.
This question was answered on January 26, 2005. Much of the information contained herein may have changed since posting.SYMPTOMS
After you attach a keyboard, a mouse or another USB-based input device to your computer, your computer may no longer shut down correctly For example, your computer may stop responding (hang) after you click Turn off or Restart
This issue may occur when the selective suspend functionality is enabled on a device that does not support it This situation may occur when two or more USB-based devices have the same vendor and product identification numbers, and when only one of the devices supports the selective suspend functionality
To work around this issue, disable power management of the USB hub.
Note If you perform the following procedure, your computer will be able to shut down correctly However, this procedure may also reduce the battery life on a portable computer.
To disable power management on the USB hub: 1 Right-click My Computer, click Properties, click the Hardware tab, and then click Device Manager
2 Double-click Universal Serial Bus controllers to expand it, right-click USB Root Hub, and then click Properties
3 Click the Power Management tab
4 Click to clear the Allow the computer to turn off this device to save power check box, and then click OK
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Posted by Eramilde of Katharine Gibbs School - New York on January 26, 2005