Macbook pro not booting properly

[nclkn]

My Macbook pro is not booting properly. When I start it up, it goes through the normal process and gets to a point where a screen comes up telling me: "You need to restart your computer. Hold down the Power button for several seconds or press restart now"

This happens every time.

I tried to start in safe mode and holding down the option key and selecting the mac partition. Neither would work.

Any help would be great.

Thanks for any help...

 

[Gorilla Power]

I think something in your file system has got corrupted. I suggest an erase and install. Most of the times its a good solution to problems.

 

[Hellhammer]

http://guides.macrumors.com/Mac_doesn't_boot

 

[peterja]

Try verbose mode to see what happends, power on and immediately press and hold command-v. You will see then if it tries to repair the filesystem and fails for example.