my HP laptop wont connect to any wireless networks

>
> I recently set up a wireless network at my house using netgear wgr614
> wireless router on my HP AMD 64 laptop. everything worked fine, and i
> could connect to any network. When I went to my mums house I realised
> that i could no longer connect through wireless and had to conenct
> through ethernet, which worked fine.
>
> I took it home, and found that I am now unable to conect to any
> network, including my home network. When I do try and connect the
> network icon in the task manager turns first to two screens and a red
> cross, then to icon of bars with all bars grey, and then back to two
> screens with red cross. It switches between these untill you either
> disable wireless or connect through ethernet. When I do try and manually
> connect, It starts connecting, and then just says 'windows cannot
> connect to swire'. I diagnosed the problem and it says that windows did
> not recieve any response from the router, and suggests low signal as the
> cause of the fault.
>
> I am in the same room as the router so this cannot be the problem.
> Also, as the problems seems to extend to any router i am sure the
> problem is in my computer. Windows can detect the network and shows full
> strenghth signal. Several other laptops in the house can connect
> wirelessly, but now not mine. I re-iterate that I can connect through
> ethernet just fine.
>
> Does anyone have any suggestions that might help? Thanks very much
>
>
> --
> ketaminz ninja