I have a laptop with windows 8.1 that won't get online anymore. It was online earlier today, working fine, but then I restarted it and it wouldn't get online anymore. I restarted the router, it's fine. My phone is connected to the same wifi and it's working fine. The laptop will connect to the network, but says it connecting slower than usual, then it will say limited access, so it connected to the wifi, but it's not working. When I open the wifi properties, it says nothing is sending or receiving. I also entered ipconfig in the command prompt and noticed my gateway up is blank, why would that be? I've tried restarting the computer again and the problem doesn't fix itself, what should I do?