Cannot boot my OSX Lion partition on mac

Hi i've been looking online for a simillar problem but couln't find anything. I currently have a macbook pro with OSX Lion and a bootcamp partition with windows that I barelly use. I was using OSX and went out of battery so I connected the power supply and pressed the power button.I got the grey screen and held the option key to choose wich partition i want to go on (as I always do). The MAC HD doesnt appear anymore, there is only the Windows version. I tried booting on the windows partition, used option X, etc..Nothing seems to work...On my Windows partition I can view and browse through my MAC HD and everything seems to still be intact. As I am out of the country I do not have my booting DVD wich seems to me the last ressort.
Could anyone help me ? If there is any post about this please share them to me I am desperate here I need my OSX !!
I am not sure of wich exact version I have of OSX Lion.
Thanks in advance,
Simon

Repair the Hard Drive and Permissions - Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.
If need be you can reinstall over the internet, but do not attempt to do so unless the drive is OK. Since Windows is working the odds are that at worst you have to reinstall Lion from scratch. At best your OS X volume csn be repaired or is OK, but OS X is corrupted and your can do the following:
Reinstalling Lion/Mountain Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list.  In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive.  If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

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