My 2011 13" MacBook Pro won't boot.

Press the button, CD drive grinds away, screen lights up, but I don't get the Apple logo or the chime.

Any ideas?

It's 3 months old so I'll be taking it to the Apple store on Thursday (no idea what they will want to do with it)

http://support.apple.com/kb/HT1379

Try that first.

Quote from dawesdust_12 :

http://support.apple.com/kb/HT1379

Try that first.

Tried with no success