Hi there. I am using Macbook Pro with Mac OS X 10.8.5. My Macbook is suddenly not getting wireless internet connection from my Wireless Router (It is connected to my Wi-Fi though). All other devices (iPhone, iPad, Windows PC) are connected to the same Router and have internet access without any problem. Same Macbook works fine with the Wi-Fi at work but having problem connecting to internet with Wi-Fi at home. Well, I have been looking for the solution to this problem for a week now. Here is what I have already tried - Zapped PRAM (didnt work) - Deleted System Configuration Folder in /Library/Preferences/ (didnt work) - Removed Network connections and tried adding them again in Wi-Fi Advanced Settings (didnt work). - Tried Apples Wireless Diagnostics (didnt work) - Tried Wireless Assistant (didnt work) - Tried creating new locations (didnt work) - Tried deleting and adding Wi-Fi service (didnt work) - Reset Router (didnt work) - Changed security setting in Router from WPA2 to open (didnt work) - Tried dscacheutil - flushcache The only thing works is changing DNS server to 220.127.116.11 from default (192.168.1.1 which is greyed out). It works but speed is very slow which is already very annoying. Need suggestions on what to do in this regard?