go to another pc or laptop and download malware byte. if you have no anti virus or it expired removed the expired one and use mse (microsoft it free) or avg or avast. boot into safe mode and install malware bytes. before you run malware bytes go into add/remove programs and remove the all toolbars that you dont ues. (google and ask is fine). then run malware byte full scan it should find the malware and remove it.