My Facebook won't load and my computer is slow.?

[Elisha]

For the last few weeks my facebook hasn't been loading. I'm logged in but it'll load all the info on the page, show its still loading then say that the page isn't responding and it'll give me the option of killing the page or waiting. Also sometimes if I right click on the computer and click an option, that option will remain on the screen even after i've clicked it and it won't go away. I've run several full system virus scans to no avail. I use avast antivirus by the way. All my software is up to date, I've uninstalled chrome and reinstalled it, I've tried almost every suggestion i've found online and nothing has worked. Does anybody have any ideas for me please? Its starting to really irritate me now. Any help appreciated!