2.53 i5 Macbook pro not booting OSX.

[meridianboy]

I have a 15" Macbook Pro with the 2.53 i5 that will not boot into OSX fully. All it does after the white screen with the apple logo & Bong is go to the blue screen & change between 2 shades of blue & show a spiral indicator. It will load windows 7 in boot camp fine, but not OSX. Does any one know what I should do?

 

[miles01110]

Reinstall OS X from your restore discs.

 

[spinnerlys]

Mac doesn't boot

 

[meridianboy]

Reinstall OS X from your restore discs.

I have tried that but it still goes to the blue screen.