Arduino Uno Rev 3 - Serial Port DNE/Board Not Connected Error

Products & Technology
#1

I purchased 2 Arduino Uno Rev 3’s. When I plugged in the Arduino Uno into my computer (Lenovo Ideapad Slim 9i) using a data USB, I recieved the following error:

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My device manager only displayed “COM3 (Arduino Uno)” as the only serial port but the error messages have also stated “The Serial Port does not exist”.

What can I do in order to get my computer to recognize a Seeed Studio Arduino Uno?

Thanks