This message was posted on behalf of Intel Corporation
In regards to your Audio issue, it is necessary to narrow down it. If you are streaming a video, the network connection might delay the Audio.
As a work around, make sure you are using the latest chipset driver of the board. Then, there is available a newer graphics driver version 4463. Try to install it manually.
Intel® Graphics Driver version: 4463
1-Download the zip file of the driver from downloadcenter, unzip and keep file in the desktop.
2-Turn Internet connection off
3-Go to device manager>Display Adapter, right click Intel HD graphics and select uninstall driver (check delete box)
4-Restart the computer
5-Go to device manager>Display Adapter, right click over Microsoft generic driver select Update driver, browse search for graphics folder at desktop (step 1)
6-Restart system and review graphics driver version installed from device manager or Graphics control Panel.
Let me know how it works.