I downloaded something dodgy (yes I shouldn't have) and when I tried to uninstall the program it released a fairly large amount of Malware and Adware onto my PC. After using Ccleaner, Malwarebites, Hitman Pro and my Bull Guard Antivirus I have managed to remove all the Malware any of it can detect, so I am confident my PC itself is not infected, however, on chrome, i often get ads pop up in new windows (without me noticing) and a random search bar sometimes appears when i am typing in the google searchbar, it will then redirect my typing into that search bar and will do this if i attempt to type. If i hit enter in the searchbar (i did it without knowing what had happened) it will take me to websites my anti-virus blocks. What is this? How can i remove it?