Please try this troubleshooting procedure and then report the results:
This procedure is not intended to solve the problem. The purpose is to gather more information.
- Disconnect the USB cable of the Arduino board from your computer.
- Open the Windows Device Manager.
- Select View > Devices by type from the Device Manager menus.
- Open the "View" menu.
- If there is a ✓ to the left of the "Show hidden devices" menu item, click on "Show hidden devices" to disable it.
- Take note of the contents of the "Other devices" and "Ports (COM & LPT)" sections of the Device Manager tree.
- Connect the Arduino board to your computer with a USB cable.
- Select Action > Scan for hardware changes" from the Device Manager menus.
Now please reply here on this forum topic with the answers to the following questions:
- Did you see any new device appear in the Device Manager tree after following those instructions?
- If you did see a new device, where is it located in the tree, and what is it named?
You can repeat steps 5-8 multiple times if you are not sure.