Lenovo x200 laptop wireless Nic Problems

Phenomenon: I used it well yesterday. I cannot access the Internet after I started it today. The figure is as follows: there is a Red Cross in the lower right corner of the wireless Internet icon, indicating that the wireless network connection is not connected. You can use your mobile phone to find the Wi-Fi signal and access the Internet, but the laptop cannot find the signal. Restart cannot solve this problem.

Analysis: first, determine whether the wireless switch of the software and hardware of the notebook is disabled. Wireless Network Card hard switch is available on the left side of x200. Press FN + F5 to call out Lenovo's wireless management software interface, and confirm that the wireless switch is enabled.

Press win + X to call out the windows mobile center and enable wireless connection in the upper right corner.

 

Generally, the machines with this problem are installed with a 360 Trojan firewall, which may be related to enabling hardware boot acceleration.