When i try to connect to the internet by wifi it will not do it

First make sure wifi switch on laptop is turned on press Fn key +F5 then turn on wifi power . Make sure wireless network driver installed and enable in network settings. Check wireless led on router it should be on. Access your router with below method . If all settings of wifi router are fine then RESET it to defaults. For that press RESET button for 10 seconds it is in back side of router. Then configure it again with below method. Connect your router to computer with ethernet cable then you can access it with following default link. http://192.168.1.1 or http://192.168.0.1 or http://192.168.15.1 or http://192.168.2.1 If you are not able to access it with above ip then check your computers ip address gateway ip is your router ip try with it. Then it ask for user name and password. Type user as "admin" and password as "admin" or "password" or blank. Then you can see configuration page of router. Then click on WAN settings and set as your internet service provider settings enable wireless .If you want secure wifi then enable WEP security in wireless security then enter code it is your password for connect wifi. Let me know if you need further assistance. Thanks for using FixYa.