By your "Internet wants to close" do you mean the browser application/program closing, a loss of communication between your tablet/computer and your modem or router or a loss of communication between your modem and your ISP?
While you're at it indicate if you're using a Mac, Windows PC, iPad/iPhone or Android tablet/phone and which browser you are using (include OS and browser version numbers. We aren't certain we can help, but members with similar combinations might be able to report whether they are having similar problems.
Please also note that this board has operating costs that to a great extent are borne by advertisers. Some intermittent problems might
be caused by the ads.