Hello! Speak Romanian anyone here?

I need your help. I want to know if a system error or if something else happened. I was away from home a week and the windows blew me. I reinstalled everything. My wallet is empty after sync. I understand that there are some problems after the new version. Thank you!
If you have not a copy of the previous .dat file of your old wallet all the Latium in this old wallet were gone. There is not possibility to have again those. Sorry.