I just downloaded Malwarebytes. My first scan detected and supposedly quarantined istart123. When my computer restarted and I clicked Internet Explorer, istart123 still comes up. I repeated the scan and had 0 detections. I went to history, which showed istart123 quarantined. I clicked delete all items quarantined. I again restarted my computer with the same result. istart123 comes up instead of Internet Explorer. When I googled istart123 it is described as a browser hacker. How do I get rid of it?
