hi ediz
go to cmd prompt and enter the following
ipconfig /flushdns
netsh winsock reset
netsh winsock reset catalog
netsh interface ip reset C:\DAF-interface-resetlog.txt
netsh interface reset all
netsh firewall reset
reboot your pc.
go to bleepingcomputer.com download malwarebytes update and run a full scan.
see if you still have problems