Arduino don't work

When we connect Arduino to the computer, it doesn't work. But when we verifield, said that it haven't any problem. And when we run the project, it says that the problem is with the arduino. What can we do????

OH GOD! Please read this! How to use this forum

And when we run the project, it says ...

I didn't know projects could talk, honestly.

[quote author=Nick Gammon link=msg=2063684 date=1422433746] I didn't know projects could talk, honestly. [/quote]

Well now, what if this project had a speech synthesizer and it was reporting an error it had received?! HUH?!