You didn't say what OS you are using or if you are connected directly to the modem or to a router. If you are going through a router disconnect from it and connect directly to the router, if that fixes the problem then your router is bad or needs to have some settings changed. Just for maybe a little more info you might look at this article: https://social.technet.microsoft.com/Forums/windows/en-US/eeb84518-903d-46d1-9398-80cf211878d7/windo...
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