[Johnny Ramone]

You could be ratted and you might be part of their botnet.

[umami smokes shisha]

I would try unplugging your router over night to reset everything
or
Change ISP's if you don't like your providers services

[Johnny Ramone]

Oh, try this. Go to cmd, type ipconfig /release. Then type ipconfig /renew. That might help.

[Entitled]

You should see hackforums say " Your router is messed up".

[Eric21]

First of all check whether all the connections to your router and modem are correct, and also make sure its clean.If no use of this things then you could call your Internet Service Provider and report about it.