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Right-click on the unknown USB Device and select "Uninstall". In Device Manager, expand "Universal Serial Bus Controllers". Go to check if the USB drive shows up in Windows Explorer. Windows will automatically install and load the driver this time. After a while, reconnect it to the computer.
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After the hard drive is uninstalled, unplug the external drive. Right-click on it and choose "Uninstall". Step 1: In Device Manager, navigate to the hard drive showing "Unknown device" (Usually it's under "Other device"). Uninstall and Update the Hard Drive Driver Expand "USB settings" and then "USB selective suspend setting", click the "Setting" and turn the default "Enabled" to "Disabled". In your own power plan, click "Change plan settings". Step 1. In Windows 10/8.1/8/7, press Windows + R keys to bring up the Run box, type control, and hit enter. Disable USB Selective SuspendSetting to Fix Unknown Device No matter it is an internal hard drive, HDD, SSD, or an external USB flash drive, follow the advice of troubleshooting, and you will hopefully get over with it. In fact, the "Unknown Device" is a very common error that most of us would face once or twice, so you are not alone.
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Full stepsįind the name of your computer motherboard, visit the manufacturer's site. In Device Manager, expand and uninstall "Universal Serial Bus Controllers". In Device Manager, find and uninstall "Unknown device". Open Control Panel, click "Power Options".
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