Connect to wifi but still waiting.... (CentOS 7)

[zenOS]

After installed centOS 7 I can connect to wifi. Two weeks later this morning, I cannot connect to wifi.
I connect to wifi. it asks for password and then I type but it still waiting... it spining... it never stop spining...
(sorry for my bad english) /

[aks]

You don't provide enough information. Seemingly something has changed since the last time you used the wireless interface, so what's changed?

Could you provide the messages and journal output?

Does Linux "see" the adapter and what state is it in:
ip link sh <wireless_nic_name_like_wlan0>

Can the wireless NIC "see" the network you wish to connect to:
iw link sh <wireless_nic_name_like_wlan0>