I have recently switched over from BT to O2 for broadband. After setting everything up, my laptop and smart phone can access the internet via Network cables and Wireless, also my Roku music server can stream music.
The big mystery is an old Dell laptop Latitude PP04S, Intel Pentium M Processor 1200 MHz running Windows XP Professional Service Pack 3 (which used to connect to the old BT router). It can see and connect to the WiFi signal, but can't access the internet.
Does anyone know what's going on or what I can do to fix it?