You can free download or update Windows drivers. Here are all official and WHQL driver versions, BIOS, sound card, motherboard, graphics card, Bluetooth, network card.

Hi, Thank you for posting your query in Microsoft Forums. There could be an issue with driver’s compatibility mode. Camera Driver For Windows 10. Windows 10 tech preview is in testing environment, there is no drivers available for Windows 10 tech preview.

As you have upgraded to Windows 10 tech preview, I suggest you to uninstall the audio drivers from device manager and install the driver in compatibility mode for previous version of Windows and check if it helps. Please follow this link below for more information: Let us know the status of the issue. Windows 10 Creators Update Drivers.