MAC HEADS!

OK, I have a problem with my MacBook. It seems I can't boot up from the Hard Drive anymore. When I boot up with the OS X Install Disk, I see that my Hard Drive is still there. I tried to do First Aid on it, but I got a message in red bold letters saying "Error: No valid packages" in red letters. After lurking, I found out I deleted the receipt while I was cleaning it up using Onyx. Little did I know I needed that receipt.
Now, I can't use First Aid, I can't Partition, etcetcetc...
Does anyone have any idea what I could POSSIBLY do?
I live in Tokyo, so it's hard to get help for me (My Japanese is so so.) I come to you, almighty /comp/ with my simple request.
Should and do I have to boot from an External HD? Do I have to just buy a new HD? Do I dare take it to the Apple Store?
Will someone help me in this time of need? I know this is 4Chan, but I need all of the help I can get. Right now, I'm using my brother's PC to get help. www.apple.com hasn't helped a bit. Please, please help me.
:(
Thank you.

tl;dr: Mac Hard Drive inaccesible due to me stupidly deleting receipt, now can't access HD at all, not even to re-install Mac OS X.

1.sell the apple to an unsuspecting college student.
2.get windows/linux machine that is better for the same cash
3.???
4.PROFIT!

>>2
My personal info is still inside it, technically.

>>2
PROTIP: there's no such thing as 'windows/linux machine'

>>4
I think he meant either/or.

Anyone have any ideas?

>>5
YOU FUCKTARD.
THERE'S NO SUCH THING AS A WINDOWS MACHINE OR A LINUX MACHINE.
GOD FUCKING DAMN.

>>6
THERE WILL BE WHEN TPM TAKES HOLD

try a helix bootdisk for data recovery. dunno if it'll work with macfaggotry, but it might.

>>8
Well I am not an "Bootdisk." You have no right to call me that if I made mistakes.  This site should have some rules about harrassments, threats, and name calling.  I am still in the need of more help in that regards.