I'm experiencing problems with trying to connect my laptop to the Internet. It was working fine till last night. Now it simply won't give me Internet access using a wifi. I've tried everything - manually set up a connection, reboot modem, restart modem, manually assign IP and DNS, but the problem still persists. I know it's not an issue with the connection. I'm currently connected to the same wifi using my iPhone. Also, my laptop couldn't connect to the wifi at my office either, giving the same problems. Thank you so much for your help!