try connecting to another open network.If unsuccessful return to talk talk and reconnect.dont know why but this sometimes works.A few months ago I lost my virgin connection for a few days and my neice connected me to BFTON.Now every now and again when virgin signal is weak or slow laptop tries to reconnect with BT and I have to do what you are doing now.Sorry to not be of more help.Once when I lost internet completely A nice indian gentleman took 2 hours to patiently talk me through the process,all forgotten now but there is help available out there.Dont give up.