what's wrong with it?

Thanks for the pm..

The reason I was asking is because I have a Dell Optiplex 755 which will start but does nothing else.. I think it's a dead mobo.. Seems a bit like what's wrong with yours.

Seeing so many youtubes vids on people baking their gpus and mobo I've decided to join the fun..

I've just ordered a small bottle of flux and am going to hot air reflow the graphics gpu to see if I can revive it..

I'll update you if the mobo comes alive.. Your mobo looks a lot like what I have.