USB Device Not Recognized

Solutions

To work around the above issues, use one of the below solutions:USB Device Not Recognized USB Device Not Recognized

Unsecure or Loose Connection

Unplug the presently connected USB device (if any). It is quite possible that the connection is not secure and has become loose. Re-plug the USB device tightly and firmly into the USB port. This is one of the most common reasons for an error in detecting a USB device.

Scan for Hardware Changes in Device Manager

Use the Device Manager to scan for new and recently installed hardware. From the Start menu, select the Run option. In the pop up box, type in Devmgmt.msc and click Ok. From the Action menu, click Scan for hardware changes. This will make Windows scan & recognize any new devices that are installed. Close all opened device managers and control panels. Follow the above steps and see if the computer detects the USB device.

USB Hub Power Management

Disable the USB hub’s power management. To disable the power management on the USB hub, click Start, then click Run. Type devmgmt.msc in the popup box and click Ok. Expand the Universal Serial Bus Controllers‘ node and follow these steps for each USBRoot Hub that is listed.

1. Right-click the USB Root Hub then click Properties.
2. Click the Power Management tab.
3. Click to clear the Allow the computer to turn off this device to save power check box and click Ok.
Note: If the following procedure is done on a laptop computer, battery life will be reduced.
Sometimes, simply unplugging the USB device, turning off the computer for twenty minutes, and restarting may solve the issue. If none of the above options solves the problem, check the manufacturer’s website for new driver information. It is possible that the drivers need to be updated. There could also be hardware failure. A hardware expert has to determine whether this is the case.