Acer laptop approx 5 years old. Windows XP SP2 with all updates.
Problem - the internet connection drops after around 10 seconds, consistently after each connection. This happens on both wireless connections (tested 3 different) and wired broadband connection to BT modem. On wireless windows wireless networking notes the dropped connection and tries to reconnect but this is periodic and not after the 10 second cutoff. On broadband windows does not register the dropped connection - icon is still present on taskbar. On wireless LAN other computers can still access shared folders on this laptop and trasfer files to and from successfully. Laptop however cannot 'see' other computers on network once internet connection dropped.
Please can someone provide a solution to rectify this problem. Many thanks.