Arduino motor schield

I bought a new l293d motor shield when I connect it uno board the led of both board are turn off and the pc can't find com3 port.

Is it damaged one?

Try with another

Try with another arduino.
Make sure you have the right drivers installed.
Search and then ask the arduino forum if problem isn’t solved.

Hai oddbot ,I connected six

Hai oddbot ,

I connected six 1.5 v cell .It is not working