HDMI converter box

Hey everyone So, here's what happened: I got a Roku for Christmas and I just wanted to hook it up to see how it worked. I don't have cable on my TV, just a BluRay player. I should mention that, since there was no way to directly hook the Sennheisers up to my TV, I bought an HDMI converter box...

I manage to scrap an i7-3770k from the recycling centre. The question is can I run the cpu on a motherboard with only 4-pin power cpu socket? I'm not thinking of OCing the cpu anyway.