its my last night problem look at here
what exactly happens when you try to connect
and what exactly you have done tease days like installing new programs new drivers updates or etc ... ?
the simple way to solve this is to remove driver and uninstall it from device manager (mark uninstall driver) and let windows install it with its own driver it will work if your wifi channel be less than 12
maybe your wireless channel goes to 12 ,13 or 14 there are hard ways to access these channels but you can go to your modem panel under wireless settings change channel to 1 to 11 or if you set it on automatic set your country to USA
if you cant change wifi channel you should to try so much things
- first of all try to go device manager > properties of your wifi adapter >advanced >location>put it on JP or EU
- sometimes with upgrading wifi driver you can access wifi channels 12 to 14 try this too
- you may need to change your location in windows to JP or EU but its a week way
- you can add location to your wifi adapter from registry like here
i suggest you to know what channel your modem is and then try to do any thing you can use android apps like (wifi Analyzer) or another