My wife and I have just moved into the annex of a friend's house. Since our phone/broadband hasn't been installed yet because of complications we are using our friend's Internet through home plugs and LAN cables which has worked fine for me and my Mac Mini and obviously because of the LAN link no passwords were needed. No problems from the word go. But, apart from a short window of time when it worked, my wife's laptop now refuses to connect to the Internet by any of her browsers: Chrome, Firefox and Explorer and comes up with the Error 105 message on Chrome, her main browser. We are using exactly the same system of home plugs as we used in our previous home, and I've checked that her LAN cable and home plug are working fine. I know nothing about DNS etc so I'm stuck. What next please?