Arduino Uno is not working and l led is alwas on

Hi

My Arduino Uno is not working, it is alwas on in the L led, but blinking when pressing the reset button.

The arduino does not come in to the comm on the pc.

Is there anything to do?
Or is the arduino dead?

Please help me.

Some background would help. What have you connected? What program have you run?

Give us some help in analysing the problem.

Weedpharma

Did it ever work? Have you installed the drivers?

My arduino has work great but when I put a servo motor on it, and have put 5v to gnd and gnd to 5v on the servo motor and the servo motor was warm. Then I disconneted the servo and turn on again for the arduino, then the L led is alwas on.

have put 5v to gnd and gnd to 5v on the servo motor

I have no real idea what that means: best you give us a schematic.

But it sounds like you shorted 5V to ground..... that can't be good.