In Desperate need of help, MBP driving me insane. Won't Boot

[1creator]

So today at Uni I've been using my MBP to take notes among other things. Towards the end of the day, I open my MBP and it's at the log in screen after waking up from sleep. Everything is frozen and nothing would work. I perform a hard shiutdown and try to turn the computer on. Sleep light flashes once, optical drive does the usual sound, but I go straight away to a grey screen and the fans are spinning fast eventhough the computer is ice cold. I've tried the following:
Reset the pram
tried repairing using disk utilities
reinstalled Mac osx

The only break through i got was when i safe booted and i was able to get to the log in screen, but the track pad and keyboard wouldn't work. So I used a usb mouse to restart the computer. MBP doesn't reboot and I'm back to square one.

Anyone know what else I can do?
What the problem is?
or how to properly erase and install Mac OS X. Because I'm not sure if i'm doing it right.

Any help is appreciated!

 

[miles01110]

I'd just take it to your nearest Apple Store or AARC.

 

[maflynn]

Anyone know what else I can do?

Call apple or visit an authorized apple dealer,e.g., apple store.

 

[1creator]

Update

Problem solved

After resetting the pram and it didn't work I opened it up and noticed a loose connection on the Logic Board[PICTURE]. So i reconnected and did a safe boot. Everything ran normally and the computer booted. Mouse and keyboard both worked, just to make sure the problem won't happen again I reinstalled OS X.

Booted up my data from time machine, been working on the MBP for about an hour and a half and everything seems to be running fine.

I circled where the connection was loose