[GPU Maker] VIA
VIA bought S3 and if your display adapter is identified as "VIA/S3", then you can download those drivers from VIA. Start here and select your operating system and then "integrated graphics". Then you have to select the appropriate display driver from a confusing set of names. The easiest way to make the selection is to go by the name of the motherboard chipset you get from CPU-Z as described above. This table may also be helpful in selecting the correct one. Download the driver, unzip it if necessary, and execute it.