Thanks for your advice.
I just plug my linux drive in my computer to check.
I type Darkoind and it says "server started"
Then i type the command to know the amount of monney (darkoind something, i copy paste that one) and I got a nice 0.00000 instead of 1012. I freaked out, plug my windows hdd again and checked my wallet, there is still n1012 dark on it. So no hack, but some random reboot may have happened. I'm on amazon EC2. I'll try to investigate.