New GPU no output on monitor

I got a new Gigabyte G1 R9 380x graphics card today, I’ve uninstalled my old GPU drivers, fitted the new card and used the provided cd to install drivers. The card lights up and fans spin normally but when I connect it to my monitor it doesn’t detect anything and the monitor switches off.

Anyone have any ideas to anything else I can try or do you think the new card is faulty?

Are you connecting the power cable 6 pin connectors to the card ?

Its plugged in to the mobo and connected with an 8 pin PCI-E