help

avrdude: stk500_recv(): programmer is not responding
i do not understand what is wrong

It means your PC is not talking to the micro-controller.

A little more information is needed.

clayton98:
avrdude: stk500_recv(): programmer is not responding
i do not understand what is wrong

Remove all the wires from the headers and then try uploading the sketch again. You have an lcd wired into it by chance?