Macbook Wont Turn On!

[Josh2005]

Evening all!
Have searched the interweb about this issue but no-one seems to give an answer that is working so thought i'd ask here

Got a Macbook, 2.16 Core 2 Duo just over 30 months old.
Basically this morning go to turn it on, got the normal Grey screen with the Apple logo then it just turns off. Tried over and over and it just does the same.

I thought maybe a Hard Drive problem but it boots fine into Windows (cant view the Mac files though) Anyone have any ideas of a solution to get back onto OSX?
Thanks

 

[RenaultSport]

Obvious one but someone has to ask... battery charged?

From memory you can hold alt + power and choose a drive to boot from... does doing that work any different?

 

[RenaultSport]

ooops. just noticed you boot in windows so the alt + Power trick works.

I would try the DVD that comes in the box and see if you can repair OSX