MBP won't boot up

Hello everyone,
My MacBook Pro does not seem to want to boot up. I remember restarting it then closing it as if I was done using it and plugging it in to recharge but I opened it up again and it was not restarting. The Apple logo on the outside lid up because of the restart I assume but when I opened it, it was off. I pressed the power button to force shut down and turned it back on. When the gray screen popped up, there was a bar below the Apple logo and spinning wheel. I thought it was just reinstalling something like when you restart after updating the laptop. The bar disappeared and the wheel kept spinning. I manually turned it off with the power button and turned it on, but the same thing happened. I eventually pressed control + R to go to Mac OS X Utilities and tried to reinstall. I connected to Wi-Fi because apparently it could not automatically log into it like before. I got a pop up saying something about security trust certificate, but I didn't know what it was so I hit cancel. I was connected to the Internet but when I had to select a disk, both recovery and macintosh were locked. I forced shut down again to try and fill in the security trust certificate thing but I canceled again and the disks were still locked. I later went to disk utilities and clicked verify, I later clicked verify disk and I think also repair disk. Eventually, I got a message saying disk cannot be repaired and to restore or back up files. I went back to reinstall but this time only the recovery disk was present.
I was wondering what I should do. I tried to call AppleCare but it's not business hours (when are they?). How do you unlock the disks? What did the error message mean? Do I have to erase everything? If I can't see the Macintosh HD disk anymore, did I deleted it by clicking repair disk? Can this be fixed by myself or should I go to the Apple Store? I do remember buying the 3 year AppleCare, but I don't know if I'll need a receipt or how they can verify I do have it. I'm sorry if this is too long to read. I'm just trying to be very descriptive on what I did. Any help will be appreciated.

Paragraph 1.
Visit to Apple Store is needed in this situaton.
Paragraph 2.
Here are the links to Apple sites.
https://selfsolve.apple.com/agreementWarrantyDynamic.do
http://www.apple.com/support/applecare/welcome/
and (this is a copy and paste)
If you need assistance with viewing or printing your invoice, please contact an Apple Online Store representative 1-800-676-2775.
Best.

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Raj wrote:
That is not the reason it didn't work. Here is the actual clarity:
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adammabry wrote:
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The genius is wrong. As long as you have the latest version of OS X on a PowerPC Mac it will work fine.
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Hi there ,
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Please re-post and let me know.
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MBP won't boot up

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