However, sometimes this feature may not correctly wake up the USB device. The Selective Suspend feature suspends the USB device to efficiently maintain battery power by enabling the computer to turn off the USB device. The USB device may become unresponsive because of a race condition in the Selective Suspend feature. You can disable the USB Selective Suspend feature by editing the registry. Additionally, the Allow the computer to turn off this device to save power check box does not appear on the Power Management tab for the USB root hub. Therefore, your computer cannot suspend any USB devices that are connected to it, and the USB devices can continue to use power while connected to the computer. However, be aware that when the Selective Suspend feature is disabled, all USB host controller drivers (and therefore all USB ports and connected USB devices) in the system are affected. If the first two methods did not work for you, you can disable the Selective Suspend feature. Method 3 Disable Selective Suspend feature If this method did not resolve the problem, go to Method 3. If restarting the computer resolved the problem, you are finished. After the computer has restarted, check whether the problem is resolved. If this method did not resolve the problem, go to Method 2. If this method resolved the problem, you are finished. After the computer starts, Windows will automatically scan for hardware changes and reinstall all the USB root hubs that you uninstalled.Īfter the computer restarts, check whether the problem is resolved. Right-click the affected USB Root Hub, and then click Uninstall to remove it.

Note You might have to scroll down the list to find this item. In the Open box, type devmgmt.msc, and then click OK. To disable and re-enable the USB root, follow these steps: This lets the controllers recover the USB port from its unresponsive condition. Use Device Manager to disable and re-enable the USB root. Method 1 Disable and enable the USB root hub Try these methods to work around this problem.

If this happens before the suspend request has completed, the devices become unstable. While multiple devices that are attached to the same hub are going into selective suspend, one of the devices on the hub can receive a wake request. USB devices attached to the same hub are very slow or completely unresponsive.

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