Adruino uno wont load

Development Tools IDE 1.x
1

Hi

I get the following message when trying to up load to my Adruino Uno.
I have reinstalled the program, Checked the bit rate to the board, pre checked the program (varified) restatred my comupter, checked it is on the right com and reset my Uno. Please advise,

Arduino:1.8.4 (Windows 7), Tarjeta:"Arduino/Genuino Uno"

El Sketch usa 2738 bytes (8%) del espacio de almacenamiento de programa. El máximo es 32256 bytes.
Las variables Globales usan 184 bytes (8%) de la memoria dinámica, dejando 1864 bytes para las variables locales. El máximo es 2048 bytes.
avrdude: ser_open(): can't open device "\.\COM3": El sistema no puede encontrar el archivo especificado.

Problema subiendo a la placa. Visita http://www.arduino.cc/en/Guide/Troubleshooting#upload para sugerencias.

Este reporte podría tener más información con
"Mostrar salida detallada durante la compilación"
opción habilitada en Archivo -> Preferencias.

Thank you.

2

ejduplessis:
checked it is on the right com and reset my Uno.

How did you do that?

3

Wrong COM port selected - that error message indicates that the selected COM port doesn't exist. Windows will give serial devices a different COM port number depending on which USB socket they're plugged into, so it could be that it's getting a different port number now.

It could also mean that the board is damaged (the USB serial converter is fairly easy to trash, especially on official boards).

If it has never worked on that computer (or if you've fiddled with the drivers recently) it could also be a driver problem. Most of the clones use a different serial chip - check the black IC near the USB port (it will likely be FT232, CP2102 or CH340G on cheap clones, or 16u2 for official boards and fancier clones)

4

On the UNO that I just received from Arduino that does not have a port using Arduino 1.8.3 has the CH340G chip in it.

5

paulbrandt2:
On the UNO that I just received from Arduino that does not have a port using Arduino 1.8.3 has the CH340G chip in it.

Install the driver: