Windows 7 Connection Drops?

My guess is that it is your wireless router, your modem or your wireless network card ( your Intel Centrino) or could be a cable problem going to your router/modem It is pretty hard to say with out some tests. Try plugging your laptop directly to your modem and see if that resolves the problem. If it does than replace your wireless router. If it doesn't check to make sure that your modem is not cycling on and off. If the connectivity lights go on and off then you might want to get a new modem. Try using someone elses wireless connection or a public WiFi and see if you are still having the same problem. If you are then you either have a failing wireless card or faulty drivers. You could also have a bad cable going from your wall to your modem or modem to wireless router. Get new cables.