no device found

Using Arduino IDE 1.x
1

Arduino: 1.6.7 (Windows 7), Board: "Arduino/Genuino Uno"

Sketch uses 1,030 bytes (3%) of program storage space. Maximum is 32,256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.
avrdude: ser_open(): can't open device "\.\COM4": 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"
enabled in File > Preferences.

This is a new UNO replica and a new user to this form of progaming. I tried a new usb cable, same error message. Maybe something was not installed proprerly??
Thanks.

2

Maybe. Check Device Manager, make sure there is nothing with an explanation point thru. If so, fix that.

Then try the Loopback Test, see if the 16U2 (USB/Serial adapter) is responding correctly.
Then check back here with results.

"a new UNO replica" So you may have something other than Atmega16U2 for the USB/Serial adapter chip next to the USB connector.