Freeze at logo screen: disk0s2: media is not present

Hi everybody!
I know this question has already been asked, but I read all the subjects I could find about my problem and I didn't find a solution. (Sorry for my english, also, I speak French )
So here is my problem: since yesterday, my MBP won't start. It freezes at the grey apple logo screen and I can't figure out why.
This happened when my computer asked to restart for an update. I haven't installed anything new and my laptop worked fine until that update.
I'm on Leopard (but I can't really tell you which version because my laptop won't start... but I keep it updated) and I have a bootcamp with windows 7 that works fine (I just can't find my documents on the mac partition (university stuff, so quite important!)).
So, at first, I read that I had to use cmd+v to see what was happening. I tried it, and my mbp juste kept saying "disk0s2: media not present".
I looked for that on the forums, and I read about trying to use the DVD, but the problem is that i don't have it. So in some posts, I read I had to use cmd+s and then type fsck -yf, let it run, then type exit.
Now, I'm there: I used the cmd+s etc, and when I type exit, after letting it run fsck -yf, it keeps trying stuff, and saying
" disk0s2: I/O error. " then checking the ethernet address, then doing some other stuff that i don't really understand.
I've already checked for the I/O error, but I didn't find anything helpful.
Help??

The internal hard drive has failed, or you have some other hardware fault. Take it to an Apple Store for repair.

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Step 11
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Step 12
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Step 13
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

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Jason,
I'm afraid I have good and bad news. Apple sent me a new original iphone. So that takes care of me but does not take care of the issue for so many people like you. I do not know if you can purchase the Apple Care plan at this time. Look into that. It really is worth it. Apple products require Apple technicians in the rare case the breakdown. Apple did not offer me an explanation of how they'll fix my phone or even saying why they sent me a new one. I synced it with Itunes and all my personalizations and apps are loaded back on it. It's like my old phone only shinyer and probably going to last me longer than the old one.
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Hi,
First try to boot up without connecting the USB device. Remove any type of external storage devices if connected and check..
If that doesnt help you can follow the steps from the link below and check if it helps..
Computer Does Not Start (Windows Vista)
Note:
If you have HP Support Assistant installed on the computer(The Blue Question Mark) then open it ==> Complete all pending Updates & Tuneups==> Restart and Check. It may solve your problem
Although I am an HP employee, I am speaking for myself and not for HP.
**Click on “Kudos” Star if you think this reply helped** Or Mark it as "Solved" if issue got fixed.

Freeze at logo screen: disk0s2: media is not present

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