LAC constantly disconnecting

[mascia]

Hi, I really hope someone can help me with this problem.

Yesterday my internet started disconnecting all the time, so I called the ISP and they said everything was Ok and that the problem was on my
computer.
I thought maybe it was my notebook network card, which was unlikely since my notebook is brand new. I went to a friend and my internet was working fine at his place.

My next guess was the modem, so I connected it to an old computer (I'm using it right now) and, surprise, no disconnections.

Then I went back to the notebook and noticed what was happening.. every few seconds my Local Area Connection changed status from "Network Cable Unplugged" to "Identifying" to "Connected" and then to "Newtork Cable Unplugged" over and over again.

Everytime it says the network cable is unplugged, I get disconnected from my ADSL connection. I read a zillion threads on this and the only solution I found was to switch my connection from Autosensing to 10Mbps Half Duplex.

I did this and when I switched to 10Mbps Half or Full Duplex and connected, windows says I'm connected to internet but I am not (can't navigate or ping anything).

100Mpbs Full Duplex connection keeps dropping every few seconds and 100Mbps Half Duplex internet works, but it still disconnects (after 10-15 minutes, though) or when under load (eg torrents).

I really don't know what to do anymore, so any ideas are welcome.

I'm using a Dell Inspiron notebook, Windows Vista, Speedtouch Modem, ADSL connection and no routers.

[johnwill]

Try a different cable and a different port on the router.