( First make sure that your wireless connection is not disabled.
Click on Start --> In search box, type ncpa.cpl and press Enter
"Network Connections" window will be opened. If you find your wireless
connection icon in grey color then right-click on it and select "Enable)
i did all but in my case icon ig green but shows that red cross sings.
what can i do my wifi not working.other device works properly same wifi network but i inter password also correctly but unable.
could you help me sir