Need help guys! I bought 3 new arduino nano boards at the same time from the same shop (they are even in the same package). But when I connect them to the PC, one is working well but the other two are not connecting to the PC. Their power light leds (PWR) are on, and their build-in leds (L) are blinking at default mode, but the PC cannot detect them or see them on the port. Any ideas?
Are you using the same USB cable for all three?