When one Pc is turned on all other computers in the house are not able to use the internet including the pc that is causing the problem. We use tp-links to connect to the internet using these: https://www.amazon.co.uk/TP-LINK-TL-PA411KIT-Powerline-Adapter-Starter/dp/B0084Y9N3O/ref=sr_1_3?ie=UTF8&qid=1462885586&sr=8-3&keywords=tp+link. We have three pc connected on this network. Any ideas on how to fix this issue? Thanks.