Here is a list of things you can do to troubleshoot a USB device not working on your computer:

1. Check whether the USB device is being detected

Connect the USB device to your computer and see if it is listed in your System Tray or whether it generates any messages.

2. Make sure you are using the correct USB Port

Different types of USB devices may require different types of ports. Make sure you are using a USB port that supports the device you are using.

3. Disable and then re-enable the USB device

If the device is connected to the computer, disconnect it. Go to Device Manager and disable the device. Then re-enable the device and reconnect it to the computer.

4. Check USB cable connection and the USB port

Inspect the USB cable connection and check whether it's properly connected to the USB port. Check for any physical damage to the USB port or cable.

5. Update device driver

You may need to update the device driver if one is available. Visit the website of the USB device manufacturer and download any available drivers.