I have had the same problem awhile and have not solved it yet though keep on trying. Maybe i will read all of this and see if I missed anything. Today late afternoon, happens of both Windows 7 and XP but this is XP right now, the last 3-4 sites I clicked nothing happened so clicked some more. Finally 8-10 windows opened and most said not responding so I closed them. Finally after a few epeisodes it connects and responds.Have tried cleaners, resetting, changing browsers. Usually use Firefox 52 on XP and 56 on W7. Have Chrome and Opera also but IE always has outdated messages. Usually use Firefox. I have Verizon high speed internet for about a year I guess, the Verizon account went away and was replaced by VerizonAOL which loads me up with junk mail and offers and keeps saying if do not update security it will quit. FINE. I am happy with G MAIL. Just waiting to see when the Verizon AOL will quit if it does. Do not think I will miss it. Right now it is easier to just keep on opening windows until one responds rather than search and try fix-it solutions. Always open to a suggestion to try though. My even work. Going to read all of this post now.