user22947: I have an unofficial Arduino Uno.
I've tested these:


Testing on USB 2.0 and USB 3.0
Changing Port (COM XX)
Updating drivers for the Unknown device to Arduino Uno (COM XX)
Resetting Arduino Board
Plug/Unplug
1x PC Reboot
Burning bootloader
Changing 'Programmer'
Uninstalling-Reinstalling device
Holding the "Reset" button while I Upload
Testing different examples (Blinking/Voltage Serial Read)
Testing different "Board" in Arduino software (just in case, you never know)
Removing jump wires


Does anyone have any suggestion more than I just tried? 

user4143: The board you have uses the CH340G chip instead of an ATMega16U2 or FTDI FT232R chip.
It requires special drivers, not the ones that come with the IDE.
Why do they use that chip instead of the proper one? Simply because it's dirt cheap. They are the cheapest of the cheapest of the cheapest USB chips around. They frequently die. You might want to save up and invest in a genuine Arduino at some point, because that one may well die out of the blue.

22947: <p>I have an unofficial Arduino Uno.</p>

<p>I've tested these:</p>

<blockquote>
  <ul>
  <li>Testing on USB 2.0 and USB 3.0</li>
  <li>Changing Port (COM XX)</li>
  <li>Updating drivers for the Unknown device to Arduino Uno (COM XX)</li>
  <li>Resetting Arduino Board</li>
  <li>Plug/Unplug</li>
  <li>1x PC Reboot</li>
  <li>Burning bootloader</li>
  <li>Changing 'Programmer'</li>
  <li>Uninstalling-Reinstalling device</li>
  <li>Holding the "Reset" button while I Upload</li>
  <li>Testing different examples (Blinking/Voltage Serial Read)</li>
  <li>Testing different "Board" in Arduino software (just in case, you never know)</li>
  <li>Removing jump wires</li>
  </ul>
</blockquote>

<p>Does anyone have any suggestion more than I just tried? </p>
 4143: <p>The board you have uses the CH340G chip instead of an ATMega16U2 or FTDI FT232R chip.</p>

<p>It requires special drivers, not the ones that come with the IDE.</p>

<p>Why do they use that chip instead of the proper one? Simply because it's dirt cheap. They are the cheapest of the cheapest of the cheapest USB chips around. They frequently die. You might want to save up and invest in a genuine Arduino at some point, because that one may well die out of the blue.</p>
