Thak you all for help....i think it was all about that Autorun hidden file....i deleted them, i did pc reboot and now it is all Ok, it's workin like allways....thank u once again.
One question i have for u....what kind of Antivirus would you recommend me....at this moment i Have Kaspesky, i know it is very good, but it makes my PC work a little slowly? Any AV recommandiation?