I've plugged into my laptop the LAN cable from my desktop computer and the Internet connection works for a few seconds, then in Vista becomes Local Access Only, then drops...then works again for a little bit and so on. From my laptop, I can't ping the default gateway ( router's interface ). I've set up the same IP information , hostname & MAC address as on the desktop computer on the laptop, but it doesn't work. A possible solution? The router is under ISP's administration.