i have just installed my arduino and all seems go well.
I have tried to start first sketch: File-Exemple-basics-blink, but led didnt blink and the interface shows this error:
avrdude: verification error, first mismatch at byte 0x0002
0x64 != 0x5c
avrdude: verification error; content mismatch
So i tried to install it in other PC, and nothing changes.
What gone wrong?
Thanks so much