The Intel Corporation i845 Windows driver is a software package that allows your computer to interact with the Intel 845 chipset family. The chipset, part of Intel's older line of integrated graphics and platform controllers, includes a variety of components such as the Northbridge and Southbridge, and it is primarily used in motherboards for supporting Intel processors. In this case, the i845 driver helps manage the integrated graphics (usually Intel 845G), audio, and other motherboard functions on older Intel systems.