Notebook: PCG-81311M (VPCF 21Z1E)

So this is the  thing. I bought my notebook a few weeks ago, and a few days ago the  screen just turned black. Since this was a problem I could not solve  without formatting the computer, I decided to use a plain Windows 7 x64  OS disc instead. Maybe it was all those VAIO utilities that made the  computer be that way. Anyways, the computer works awesome at the moment.  But the only thing is that the wireless does not work, along with 2 USB  ports on the left side of the notebook. At first the ethernet did not  work aswell, but thanks to the drivers on this site I managed to get it  working. So atleast I can connect to the internet, but only with a cable  attached, and I'm all against cables.

So if any of you guys know how to fix this problem, do tell me, because I would be the most happiest guy of the day T_T