Windows 8 wireless network card has been turned on and the wireless light is on but can not find the wireless signal how to do

Open wireless Internet access requires three levels of settings need to be turned on: physical switch, software switch and wireless service. The wireless light will only illuminate when the switch is turned on. When the indicator light is on but the wireless network signal cannot be searched, check if the wireless service is not turned on.
Operation steps:
1, open the service management interface.
You can open
in three ways. (1) Right click on the desktop computer icon, select “Manage”, click “Services & Applications>, click “Services 
( 2) Press the Windows logo key (the button on the

logo on the keyboard) and the R key at the same time to open the running interface, input services, and click OK; as shown below:

(3) Press simultaneously CTRL, Shift and ESC buttons, open the task manager, click on the "Services" tab;

2. Find the WLAN AutoConfig (WlanSvc) service, if it is manual or disabled, right click on this service selection “Enable" (The Task Manager service displays “Start”).
If you want this service to run automatically after booting, right-click on the service and select "Properties", select the startup type as "Automatic", then click "Application", click “Enable”, Click the “OK” button to close the settings window. This will restart the computer and the service will run automatically.
The setup steps can be referred to the following figure:

windows8 tutorial