ARDURINO NANO IS ALL TIME BLINKING ''L'' (ORANGE LIGHT) WHAT IS THAT MIND?
I CAN'T DO IT OPERATIONS WITH HIM? PROBLEM,,HELP
What happens if you do file/new and upload the blank sketch to the Nano ?
What messages do you get ?
Have you selected the correct port ?
Have yo selected the correct board ?
Which processor have you selected ?
FP777:
ARDURINO NANO IS ALL TIME BLINKING ''L'' (ORANGE LIGHT) WHAT IS THAT MIND?
It minds that your Caps Lock is stuck on, a silly mistake. 
And the blinking light means that you bought a new Nano and have not downloaded any other program into it yet.