Hi,
What is the status of the WLAN adapter in ''Device Manager > right click on adapter entry > Properties > General > device status box''?
Does it say that ''this device is working properly''?
If so, try resetting the network stack (not sure if this is what you meant when you said that you "reset the system"
Type ''cmd'' in the Windows search box on the Taskbar and then click on "run as administrator"
In the Command window, type the following commands one at a time and then hit Enter after each command
ipconfig /release
ipconfig /flushdns
ipconfig /renew
netsh int ip reset
netsh winsock reset
Yes there is a space before the / symbol in some of the commands
Then restart the laptop and check the WiFi