After being without broadband for two weeks because of a BT fault I got reconnected yesterday and everything worked well. I'm still able to connect with my laptop and mobile but not with the desktop, when trying to troubleshoot the problem I get a message - Problem found "Wi-Fi" doesn't have a valid IP configuration.
Try resetting the TCP/IP stack. (It's fixed loads of problems for me). If you're using Windows 10, follow the instructions under 'Solution 1' here: http://windowsreport.com/wi-fi-valid-ip-configuration-windows-10/ For earlier versions of Windows, scroll down to 'Let me fix it myself', and then to the appropriate version of Windows, here:...
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