Thank you very much for your post.
On regards to your question, there are a couple of things to check:
Driver is up-to-date:
Many issues can be resolved by updating an out-of-date driver. Verify you have the latest drivers.
Wi-Fi radio is on:
Use the hardware switch, button, combination of keys or software to turn the Wi-Fi radio on.
Wi-Fi adapter is enabled:
In Control Panel > Network and Internet > Network Connections, right-click on the adapter. If disabled is an option, the adapter is enabled.
Intel® Centrino® Wi-Fi Products: Resolving Wi-Fi network connection issues:
I hope this helps