Black screen on new graphic card rx 560

[MrBrzzy]

Hello there,

Last week my old GPU died, so I bought new one rx 560.

I installed GPU in my motherboard, plugged 1x6 connector (gigabyte version, windforce GPU) and turned on PC.
When I turned on PC, there's only black screen.

First, I think, my old GPU damaged my slot, but Im not really sure, or just cable is problem.

If anyone here had same problem, please, help me what to do.

Here's my spec:
i3 4160
8gb ram g.skill
msi h81m-p33
silverstone 500w 80+
ssd 250gb samsung

 

[popatim]

Connect the monitor to the motherbd video output.
I'm guess it switched to using the intel GPU as the primary and not the new 560.