HELP!!! MacBook Pro Won't Load all the way to Finder desktop

When you start up, try holding down the shift key. Normally, that will launch you into OS X Safe Mode. If that loads the OS, then try running disk utility in the Applications - Utilities folder.

You can also access Disk Utility by loading the the original system restore disk that came with your Mac. Insert the CD, then power on your computer while olding down the "C" key. That prompts the computer to try to boot from the CD drive. If able, you can then try running the disk utility from there.

Good luck!

Edit: To get your CD out, power on the computer while holding down the mouse button below the trackpad. That prompts the computer to eject the CD.

better yet, check the hard drive without booting the OS

hold command+s while starting to boot into single user mode. you should get the grey then a black screen with white lettering

after it's done writing, type in

fsck -f

include the space
it'll run a scan and fix minor issues on the hard drive.

when it's done (it will say so)

type reboot and hope for the best!
also, try repairing permissions through apps=>utilities=> disk utility


good lucck!