I have a Macbook pro OSX version 10.6.8. Recently my brother bought an ethernet cable and connected it to his Xbox for XBoxlive. Soon after, my internet stopped working. AirPort says that I am still connected to my Wifi network, but I can't search the web. Additionally, the wifi symbol on the top right corner of my screen has an exclamation mark on it. My router is a Westell Versalink 327W Model# D90-327W15-06. On my iPhone4, I am connected to Wi-fi on the same router, and I'm able to access the internet (going on any website). These are the resolutions that I tried. -Rebooting the router -Restarting my MB -Manually removing and re-adding the IP address -Manually deleting and re-adding the IPv4 Address, Subnet Mask and Router. -Manually deleting and re-adding the DNS server and Search Domains. -Removing ethernet cable from xbox and from router How can I fix this "wifi on, but no internet" problem?