Windows 8 Hdmi Stopped working

[moreease]

HI!

Yesterday I came home and my computer wouldn't start anymore. nothing happenened so I figured it was my "feeding" (in case this is a weird translation: what I mean is the power distribution)

So I bought a new one, hooked up all the plugs, well not all

Computer works again, but my hdmi cable stopped working on my tv. I tried hooking up my monitor (which normally runs on dvi) but that also didn't work.

Is it possible i forgot a plug? or any other ideas?

cheers

 

[moreease]

I might add that my pc still 'sees'my tv