Does the network show up if you left click the wireless network symbol in the system tray (lower right of screen)?
If not, is the wireless card of the laptop turned on (either a switch or FN + an F key, which depends on your model laptop)?
yes the Network is visible in the tray bottom right
and yes the network card is switched on !
it runs the connecting bar / dots then says its cannot connect to my network and refers me thru a process which leads no where & round in a circle !!!!
Now the first laptop( W7) to exhibit the problem seems ok ( i reset the modem ) and the newest one is playing up instead....
while i have solved the issue here temporarily at home my daughters(W7) laptop at university digs is doing the same thing at her student address.