I have an HP Pavillion dv7 3065dx, which runs Windows 7 Home Premium 64bit. Recently I've been having trouble playing internet videos from any website (they either don't load at all or take 5 or more minutes to load regardless of their size). When the problems began, I tried to download the free version of AVG and Malwarebytes to see if a virus or a rootkit could be the cause of my troubles, but though the downloader for the programs did download, when it ran it returned a message saying that it couldn't access the internet, and asking for information on any proxy server I might be using. I'm completely useless with computers. Please help me!