Installation of this driver often resolves "Unknown Device" errors in the Device Manager. Step 2: Integrated Graphics (Intel GMA 3100)
If you experience no sound, look for the "SoundMAX Audio Driver" specifically listed for the Lenovo M57 series. Step 4: Ethernet/LAN (Intel Pro/1000) ms 7352 ver 10 motherboard drivers download high quality
Go to the Lenovo Support site and enter "M57" or "M57p" in the search bar. Installation of this driver often resolves "Unknown Device"