Something happened, and now the explorer.exe is acting strange. For example, I have a mirc.exe startup when the system boots. Window with this program immediately freezes. Also icons in the tray do not change their state.

P.S. I tried to reboot my PC and shutdown him.
P.S.S. It's interesting that the safest mode looks good.
P.S.S.S. Problem solved. Thank you all for your help.