The 'USB Device Not Recognized' error can appear for several reasons — a glitchy port, a power issue, a missing driver, or occasionally a fault in the device itself. These steps cover all the common causes.

Try a Different Port and Cable

This sounds obvious, but it solves the problem more often than anything else. Plug the device into a different USB port — ideally one on the back of a desktop, which tends to have more reliable power. If you are using a hub, try connecting directly to the computer. Try a different cable if you have one.

Restart and Re-plug

Shut Windows down completely (not sleep or restart) and power it back on. Once Windows has fully loaded, plug the USB device in again. A full power cycle clears temporary states that confuse the USB controller.

Check Device Manager

  1. Right-click the Start button and choose Device Manager.
  2. Look for anything under Universal Serial Bus controllers or Other devices with a yellow warning triangle.
  3. Right-click that entry and choose Update driver. If updating does not help, choose Uninstall device, unplug the USB device, wait ten seconds, plug it back in, and let Windows find a driver.

Disable USB Selective Suspend

Windows can cut power to USB ports to save energy, which sometimes confuses devices. Go to Control Panel > Power Options, click Change plan settings next to your current plan, then Change advanced power settings. Expand USB settings > USB selective suspend setting and set it to Disabled.

Check for Windows Updates

Go to Settings > Windows Update and install any pending updates, including optional driver updates. USB chipset drivers are sometimes delivered this way.

If the device still will not show up, ask us with the make and model of the device and we will take a closer look.