Help! My osx partition is not booting up!

[emiljan]

I just reinstalled OSX on my MBP last night and today it wont let me boot into it. When the computer is starting up it gets to a blue screen and nothing happens it just stays like that.

I thought at first it was a permissions problem so i Repaired Disk Permissions using my OSX 10.6 disk and still no luck.

Here is a pic of what the blue screen looks like:

Any help is appreciated. I want to be able to fix this without have to reinstall the OS all over again. Also my Windows 7 Bootcamp partition works fine.

 

[McGiord]

Can you boot in SafeMode? Hold down the shift key while booting.

 

[emiljan]

I haven't tried that yet. Ill do that now a post the results.

 

[emiljan]

No luck. Booting into safe mode did the same thing. It goes to the blue screen and stays there.

 

[McGiord]

Try now booting in verbose mode.

Hold down the command and v keys, this will show you all the things that are happening.
Make notice when it stops.

 

[gr3chan]

Your computer is hanging at the login screen, which typically a sign of a corrupted OS. If safe boot does not work as previously suggested, use your 10.6 disks to reinstall the Operating System. Snow leopard automatically does an archive and install so you won't lose any data, so long as you don't choose to erase the HD first. If you are still having the same problem after the reinstall, you may have a hardware problem such as faulty RAM or logic.

 

[emiljan]

I just reinstalled Snow Leopard and everything is back to normal now.