LAN disables when downloading... eh

[juno_first]

Only when downloading using the std xp download feature the LAN disables the internet after a few minutes & I then have to disable LAN then re-enable it to regain the internet, sometimes I get a bsod after re-enabling too.

I don't know if its hardware or software as my phone line was struck by lightning last year which blew a port on the router & one of the mobo LANS, everything else is fine though like streaming vids & torrents.

Anyone any ideas, I think it must be software, but where...

thanks