I recently had to change my motherboard because the old one was dead. I installed the new board booted up OS and everything seemed fine. Even played games and was using it for 3-4 days. Today I was fiddling in the device manager when I saw some missing drivers. Here's the screenshot showing you the items. Any help on this? I will download the chipset driver to check if it fixes it. UPDATE: My laptop has the same problem too. It never had anything replaced. Can you confirm whether your machine have them installed or not? Thanks.