Sony Vaio Pcg-31311m Drivers Windows 7 [upd] -

Select > Search automatically for updated driver software . Windows 7 can often find generic drivers for the PCG-31311M's components. 5. Third-Party Resources (Last Resort)

Here is the deep post—covering why this is hard, what you actually need, and how to get it working without breaking your system. Sony Vaio Pcg-31311m Drivers Windows 7