OSX tiger wont boot up, Help me please anyone!

Well this morning i was talking on the phone and all of a sudden my comp went blkank and my phone died so i'm thinking i had a surge of some sort and now when I try to boot up my comp I get the grey screen and the apple icon and then it goes to blue and the OSX startup bar loads , but then it just sits there on blue screen with my cursor working. I tried the commandoption+PR startup but that didn't work and then I tried restting the SPU or whatever by unplugging power and holding the power button hwile plugging in but that didnt work iether so any helop would be tremendously appreciated, I am a student with tons of projects do so, please.

Hi, RIDAHwon. Likewise, welcome to the Discussions.
1. After a power outage or surge like this, the first thing to do is assure there was no hardware damage. Run the a href="http://www.thexlab.com/faqs/aht.html">Apple Hardware Test that came with your Mac.
Since you have a desktop Mac, I recommend you seriously consider investing in an Uninterruptible Power Supply (UPS).
2. If the Apple Hardware Test fails, you should have the machine serviced before proceeding further. If the Apple Hardware Test returns a clean bill of health, then:• If your Home folder is protected with FileVault, try the instructions in "Mac OS X 10.3, 10.4: FileVault - How to verify or repair a home directory image."
• Otherwise, see my "Resolving Disk, Permission, and Cache Corruption" FAQ. Perform the steps therein in the order specified.3. If the blue screen issue still remains, the outage/surge may have corrupted a Startup or Login Item. My "Troubleshooting Startup and Login Items" FAQ can help you pin that down if such an item is causing the problem.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

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