For the past couple of days explorer keeps opening the wrong page, it only shows adverts when I want to open a new page. I don't know anything about computers SOMEONE HELP ME. I've run malwarebytes scan, windows defender and they found 3 trojan files, deleted them but the problem is still there. I don't know what else to do. I read about checking hosting files and running HJT????? No idea what those are. Can someone give me guidance please.