Or that ASUS (ASUS) X554LP notebook, wireless card for Qualcomm Atheros ar956x, one day to change the environment, WiFi (here is referred to as WiFi network a) even not online. Mobile phones, other notebooks with wireless connection is no problem.
Try to reload the network card driver, restart the WLAN configuration service, etc., connect WiFi network A after entering the password, always return to Windows can not connect to the XXX network!
Accidentally try to try the laptop to find other WiFi network (referred to as WiFi net B), although do not know the password, but returned the "Wireless password is incorrect" information, indicating that other WiFi network can be normal feedback, only WiFi network a cannot connect. After inquiries, found that WiFi A is from a router connected to a network of two levels of WiFi, after many tests found that Qualcomm Atheros ar956x network card connected to a level of WiFi is not a problem, and connected to two-level WiFi failure, So decided to connect to a two-level router (switch) instead of using a wired network card, first of all make a use of it!
ASUS (ASUS) X554LP notebook Wireless network connection problem under 64-bit Win7