I have recently had some malware infect my Internet sites, of three types all at once one, a webpage will disappear and in its place a page saying "And now a word from our sponsors... you will be redirected in a moment" (at which point I kill it); two, words on the web page are double-underlined and a window appears for it, and three, pop-ups). I scanned and cleaned the computer with the (free versions of the ) following programs: Malwarebytes Super Anti-Spy Adwcleaner Junk Removal Tool (I also then scanned it with HitmanPro, but no results were found, which is good because it won't fix anything unless you buy it.) Of course even before that I looked for unwanted programs in Control Panel>Programs and Features, but naturally not all sneaky programs are listed. I also read of Combofix, but it was advised not to use it unless I had considerable technical knowledge, which I don't. Anyway, with all these attempts, the infections are still there. Well hidden. What else can I do?