1). Access the device manager through the control panel. This will open a window containing a list of hardware and controllers installed on your computer. You can expand each section, such as hard disks, by clicking on the plus beside it.
2). Look to see if your device has a yellow symbol with an exclamation mark beside it. This indicates a problem with the device. Double click on that device, and follow the prompts to reinstall the drivers.
3). Turn off your computer and physically reinstall the device, if reinstalling the drivers was unsuccessful in resolving the problem. Turn on the computer and see if the device is now recognized and working. If not, the device is likely faulty and needs to be replaced.
