Mega 2560 Projects Elegoo

Dear fellows

I have tried to make the folllowing project

The error message is

Sketch uses 3302 bytes (10%) of program storage space. Maximum is 32256 bytes.
Global variables use 71 bytes (3%) of dynamic memory, leaving 1977 bytes for local variables. Maximum is 2048 bytes.
avrdude: ser_open(): can't open device "\.\COM3": The system cannot find the file specified.

Can you help me?

The sketch complies ok with me using an uno and uploading ok.

What's your board set too, looks like your boot loader could be missing or you have fried your Arduino,

Does it show up when you look at the port settings ?

Double check your com port in device manager and in the IDE. While you are at it make sure the correct baud rate and board are selected in the IDE.