Macbook Pro black screen

Hi,

I have a Macbook Pro from 2012 with Yosemite.

It was working just fine when I decided to update Xcode. The screen froze after a few seconds, and after a few minutes it went black like it went to sleep. I couldn't get it back from sleep so I waited for the battery to die to turn it off by itself since hard reset wouldn't work.

When the battery died, I tried to turn it on. After the Apple logo appeared, the login screen appeared, I typed my password and than it went black again.

I already tried PRAM reset and also SMC reset, neither of those worked so now I'm out of ideas.