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Windows Device Manager

Code 14: This device cannot work properly until you restart your computer

Windows indicates that the device state requires a system restart.

First action

Restart Windows normally.

Use the error code as a Windows device-state clue. It does not by itself identify the exact failed component inside the hardware.

Then verify

Do not stop at the code disappearing

  1. 1

    Check Device Manager again after restart.

  2. 2

    If the code returns, continue with device-specific driver and connection diagnostics.

After Windows reports the device normally, run the matching DeviceOK test when one exists—for example camera, microphone, keyboard, mouse, controller or audio—to confirm the user-facing function works.