problem with my macbook

good afternoon,

I installed windows 7 on my macbook using bootcamp, after few days , the part of mac os mavericks stopped working however , windows part work correctly still now.
to be more clear , when i switch on my laptop ( macbook ), i see the logo of apple and the progress indicator , just after loding this indicator , the laptop switchs off automaticly.

NB: i don't want to lose my files, In fact, i can enter to my files which are in the mac's part from windows part , but the problem is that i can't enter to my files that are coded by My Safe ( application ) .

I wait for your help , thank you

 

yes i can boot to recovery partition , but the problem is that i didn't create a backup using time machine.