I'm having the same problem also. I am working on a project for an engineering class and my group and I bought a brand new Arduino Nano this year and have taken off the conducting foam. I have connected the Arduino Nano to my laptop using a USB cable, but it will not connect on Arduino Create, nor will the code upload on the Arduino software even though the code compiles. This is the error message that I get:
Arduino: 1.8.9 (Mac OS X), Board: "Arduino Nano, ATmega328P (Old Bootloader)"
Sketch uses 2442 bytes (7%) of program storage space. Maximum is 30720 bytes.
Global variables use 200 bytes (9%) of dynamic memory, leaving 1848 bytes for local variables. Maximum is 2048 bytes.
/Users/josephcao/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/bin/avrdude -C/Users/josephcao/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf -v -patmega328p -carduino -P/dev/cu.usbserial-AC00MC88 -b57600 -D -Uflash:w:/var/folders/9j/sty7b2qn2_x4jk6kfc4bb1p00000gn/T/arduino_build_533804/Joystick.ino.hex:i
avrdude: Version 6.3-20190619
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2014 Joerg Wunsch
System wide configuration file is "/Users/josephcao/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf"
User configuration file is "/Users/josephcao/.avrduderc"
User configuration file does not exist or is not a regular file, skipping
Using Port : /dev/cu.usbserial-AC00MC88
Using Programmer : arduino
Overriding Baud Rate : 57600
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00
avrdude done. Thank you.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
I am using Arduino 1.8.9 on a macbook air. Other example codes, such as Blink, will not run either. I also tried changing the processor from ATmega328P to ATmega328P (Old Bootloader). If you could help that would be greatly appreciated.