I know that this forum is for W7, but can you try to install Vista to see if you get the same problem? If you do, we can probably think of looking at the physical setup of your laptop. One thing that does alarm me - according to the manuals, the wireless function is enabled at the factory and is set to ON
by default - see the link below. In my opinion, this should be set to OFF
and you should enable it yourself if you want to use this facility. When you install W7 (or indeed any OS), you should ensure that ALL network devices are turned off or unplugged as until the OS is fully installed your system could be vulnerable.