Yoga 2 13'' doesn't start nor boot after crash.

Hi,

yesterday my Yoga 2 13'' just turned off and I'm not able to turn it on again. It doesn't even boot or anything. If I press the power button it lights up for a few seconds (screen doesn't) and then goes off again. No difference if I have the power plug plugged in or not.

The area where the mother board is located seemed to be really hot when it turned off. It also still get's hot if I have it plugged in right now. Without being turned on.

I think, obviously, it's a hardware problem. But what could it be?