The Mpact Media Processor Windows driver is typically a software component used to enable communication between the operating system (such as Windows) and the hardware that processes media tasks. This could be related to the Mpact video, audio, or media acceleration technology used in specific graphics or multimedia devices, particularly those from the late 1990s and early 2000s. Mpact was a brand for multimedia processors used in some graphics cards, like those from 3dfx Interactive and other early multimedia hardware companies.