New
#11
What about reinstalling Vista? Would also remove the risk of getting banned for piracy. Sony does not give windows 7 licenses without seeing cash. And I doubt certified technicians are so careless to pirate the OS on devices they are fixing.
Anyway, this post in an old thread could work, or at least worked for him and a few others.
Since he is basically teaching how to hack the driver installer into believing that your card is in the compatibility list, you can do that with any driver supposed to support the 8400m GT and it should theoretically work.
At most you screw up and install an incompatible driver and have to remove it from Safe mode.