Malware loading as registry entry

I have a malware PUP.Conduit that keeps on loading as a registry entry on my machine. I can not stop it, i remove it and after a few days is still back there. I do not have any other malware on my pc and i have tried many kinds of antimalware. How is that possible?

Does the following help you further: http://malwaretips.com/blogs/remove-conduit-apps-search-and-toolbar/ ?