Sony VAIO fresh install driver problems

Laptop:
Sony Vaio
Model: PCG 71315L
Processor: Intel Core i3 CPU M370@2.40 Ghz
Windows 7

My uncle asked me to reformat his laptop. I basically did a fresh install but now
upon when I log on I cannot connect to the internet.

I opened device manager and several drivers seem to be missing.

.Base System Device
Ethernet Controller
Network Controller
PCI Simple Communications Controller
Unknown Device

I don't have much experience so I don't know what to look for and because it can't connect to the internet, I don't know how to make it auto search for its drivers. Can anyone give me a place to start searching for these drivers? I don't even know the manufacturer.
 
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