A portable graphics driver is a self-contained package that doesn't require installation. You can run it directly from a USB drive or any other portable storage device. Portable drivers are useful when:
lacks built-in graphics, your video output is likely powered by an onboard chipset (like Intel GMA) or a dedicated card (like NVIDIA or AMD).
It looks like you're trying to find a for a system with an Intel Core 2 Duo E7500 CPU.
The quest for an Intel Core 2 Duo E7500 graphics driver is a classic tech mystery because of one crucial fact: the E7500 processor itself does not have integrated graphics