Mavericks regularly corrupts the file system

Hi,

I have a 2010 Macbook Pro, 13" with a 2.4GHz Core 2 Duo. I have OS X Mavericks, along with a copy of Windows 8 on my bootcamp partition.

I have a recurring problem, which happened three times already. It started in July. So I turned the computer on (after it beeing turned off normally), and I was just blocked on the booting screen, i.e the gray screen with the apple (but no loading wheel). So I had no other choice but to press the on/off button for several seconds, until the computer turned off.

Then I tried to turn it on again, and it started in safe boot mode. When the loading bar was full, it would turn off on its own.

I tried to use the Disk repair utility in the recovery partition, but it displayed a message like "Disk cannot be repaired, reinstall Mac OS"

Fortunately, I have my Windows partition, which I could still boot on. So I was able to backup almost all the data I needed. I said almost, because with some files, the copy-paste process would just fail, telling me that the files were corrupted.

I then reinstalled Mavericks from scratch, and it worked perfectly... for three weeks. then I had the exact same problem. Same problem, same solution, I again lost a lot of time backing up and reinstalling, again losing some data on the road.

And back to the present, today, guess what, same problem ! So I am getting a bit tired of that, and given that college has started, I really don't have time to waste every three weeks for fixing that.

I would be really glad and thankful if you could help me with that issue.

Thank you,

Gaetan