Macbook Pro early 2011 won't boot.

Hey everyone,

you might be thinking this is one of those things where a quick redirect to a support page might help, but I've tried that.

Here's my problem: I was just doing some photoshop work and had Chrome running in the background, before my screen went black and everything stopped responding. I had to force it to shut down. When I wanted to boot it up again, it did show my log in screen (so my user and the guest user). I logged in, but noticed the progress bar was moving extremely slow. It stopped about 1/3 in. After that, the screen went entirely grey and another minute later, it just turns itself off again.

I have tried to reset the NVRAM and the SCM. Neither works (in fact, I have the feeling it doesn't even do anything with my start up commands).

I tried to enter the Disk Utility, yet it won't let me do that either. I'll just be sent to the log in screen. Netboot doesn't work for me either.

I opened up my laptop and reinserted the RAM (16GB of RAM (by Crucial)).

Please, if you have any advice for me, do drop a response. I'm at a complete loss here.

Cheers,

Luca