ANYWAY, I can't install the driver software correctly
I'm using widows 7 OS. I have installed Arduino IDE v1.8.5
After inastalling the IDE I connected my Arduino UNO board to the pc and then the driver installer launched automatically.but then the error message displayed saying that the device driver software is called "Arduino Uno (COM 15)" wasn't successfully installed because of it is not a signed driver and ask from the device manufacturer for a signed driver. then i tried to install the device driver manually just as in the guide,but then it shows the device driver already has been installed.when i was trying to write an example code into the board it shows following error message.
Arduino: 1.8.5 (Windows 7), Board: "Arduino/Genuino Uno"
Sketch uses 928 bytes (2%) 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 "\.\COM1": 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.
and then i tried with reinstalling the IDE , but even then the same result
What I should do. How to install an signed driver