I can't connect to the internet all of the sudden. I have limited or no connectivity due to the fact that a network did not assign a network address to my computer. It shows that i'm sending packets but not receiving any. I live in an apartment so i don't have a modem since the apartment complex provides the internet. I know the internet works b/c it works when i connect my laptop via lan, so it's definitely my main pc that's the problem. I checked and it says the device is working properly. I've tried rolling back drivers, updating drivers, re-installing OS, using alternate OS, but still no internet. Somebody please help me.