Hi, I have an unknown redirect / hojacker on my windows 8.1 installation. It ocassionally redirects (not every time), mainly when searching the internet. It redirects to some thematically linked website, so for example when I search for SKype download, it will redirect to some dodgy skype advertising site. This happens with all types of search and the webpages it redirects too seem to always be different. I have scanned with Malware bytes, Comodo, Hitman pro, Hijack this, and Windows malicious software removal tool, but the redirect still occurs. It has not redirected for a couple of days now, but it seems to resurface after sometimes short periods, and the laptop is running very slow, so I think it is still hiding in there. Thanks for any help.