Sony vaio pcg-71211w won't boot up!? Please help!

Turned my laptop on screen came up as normal for a moment then went to all black/grey depending on viewing angle... Turned it off then back on and now its just grey all the time no start up at all... Have connected to other moniter but still won't work won't even put a signal out through VGA or hdmi can anyone shine some light on what to try next? Thanks in advance