VAIO Wireless Capabilities problem

Hey everyone, I have a problem which I've looked online for solutions but none seem to be complete or work.

I have a Sony Vaio VPCEA390X (windows 7) that I just got last year in early October. Everything was working fine until yesterday. The wireless wasn't working, and it seems the wireless capabilities switch isn't either. When at on, it's supposed to illuminate, however, it doesn't. When I first turn on the computer, sometimes it lights up for a minute on the log in screen, but after I enter my password, it's gone.

It's not the wireless's problem, nor is it my internet. Just the wireless switch on the computer. It's on, but it's not working.

I've tried removing norton antivirus, and it didn't work.

Can someone please guide me through this and give me a permanent solution? (If you know why this happens that'd be helpful too.) I'd hate to tell my father this expensive laptop is already broken....

Thank you!