Black screen after GPU and PSU upgrade

[CRV]

I just upgraded to a 750w PSU and a Sapphire R9 290 Tri X OC. All I got is a black screen. Every seems to have power.

 

[h9826790]

If your motherboard has on-board graphics capabilities, you may need to disable them.

 

[CRV]

I already got it fix, thanks.