If you are running Windows 7 or Windows 10, select Device Instance Path instead of Device Instance Id. When you have found the hub that has your device listed, click the Details tab and select Device Instance Id from the drop down menu.You can double click on every USB Root Hub entry and click the Power tab to see if your device is listed. To do this, expand the Universal Serial Bus controllers group at the bottom of the list. You will now need to determine which USB hub (port) the troubled device is connected to.Open the Windows Device Manager by going to Start » Run, type in devmgmt.msc, and then click the OK button.
Using DevCon, you can enable, disable, restart, update, remove, and query individual devices or groups of devices. The DevCon utility is a command-line utility that acts as an alternative to Device Manager. Install the DevCon Utility from Microsoft.In either case, the device is not re-detected by the computer and thus you will not be able to communicate with it.įollow the instructions below to re-detect the device within Windows when this happens: Also, this can happen when a computer returns from having been hibernated. For example, often when a computer goes into standby or power-save mode it will often shut down power to the USB ports. This behavior occurs when the device loses power, but the computer does not.
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