The driver for Windows 7 64-bit is available as a legacy download from Intel. This driver package (version 15.12.75.4.64.1930) is designed for systems using Intel G31, G33, Q33, and Q35 chipsets. Download and Installation
The most reliable version for the 64-bit architecture is (internal version 8.15.10.1930). intel gma 3100 driver windows 7 64-bit
You can download the Intel Graphics Media Accelerator Driver for Windows 7 64-bit directly from Intel's support site. Intel Graphics Media Accelerator (GMA) 3100 The driver
If you have a pre-built machine from Dell (like an OptiPlex 330/360) or HP, their support sites often host a customized version of this driver that is more stable for their specific motherboards. How to Install (Even if the Installer Fails) The Solution: Use the Modified Vista Driver 4