My computer (using windows 7 Ultimate built 7600) cannot connect to the internet, it keep saying "identifying ...", nothing more happen. I tried both reinstall and ghost many times, no can do. The problem didn't occur after fresh install or ghost. I can connect to the network freely but after several hours, for example I was on the web, it just suddenly lost connection and the yelow ! appear. I also tried the newest network driver (reatek), the same result. My laptop (Macbook) which is using wifi network is fine. It can go to the net just like normal. I can connect to the gateway using my laptop (192.168.1.1) but the computer isn't - cannot ping any ip either. Note that the problem didn't occur in windows XP (same computer) so I guess it's windows 7's fault. This is my ipconfig /all Appreciate any advices. Thank you for reading.