system
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I solve the problem. How?!? Zyndstoff gave my an ideea, to erase fonts from %windows% folder.
Here it is the solution:
I erase Calibri Font, and then I restart my computer. After my Pc was restarted, I opened my Avast and all the fonts came back to normaly. Office is working fine too. ;D
Thanks to everyone who helped me. All of you deserve a great and big beer.
I hope my solution will help other users.
Have a nice day (or night). 
Great Antivirus, great Community.
Later Edit: I must say that Calibri font cannot be deleted when OS is running normaly. I made a backup (will all calibri fonts) and then i delete it in safe mode. If i think better, i will rename the old name.