I made a search on google before this threads, as my problem is not solved yet.
Because this is my first project on Arduino, I apologize for my lack of skills and possible not understanding of the future advices.
I followed a book tutorial, but I started having problem when I connected my Arduino board to my computer(windows 10). In fact, the automatic installation didn’t start, so I proceeded with a manual one following the advices found in http://www.arduino.cc/en/Guide/Troubleshooting#upload
I did it, but the computer considers my arduino as Arduino DUE, while I have an Arduino UNO. (see the picture)
Then, IDE doesn’t find any serial port and when I tried to upload it on my board, it showed this error:
Arduino: 1.8.9 (Windows 10), Board: "Arduino/Genuino Uno" Sketch uses 1016 bytes (3%) of program storage space. Maximum is 32256 bytes. Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes. avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified. Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions. This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
What I can do?
P.S.: I found in a similar thread that a possible problem could be CH340 driver, but even if I installed it the problem is still there.