Put the Stock Motherboard Realtek audio driver in and Do NOT Update it from Realteks site. If you have to update it use the newest one from your Motherboard manufacturers site. Every Motherboard manufacturer modifies the stock Realtek drivers to work with the different Chipsets and Bois configurations.
I can't remember how many times I downloaded drivers from realtek and installed them on peoples computers after doing fresh OS installs just to have them either lock the computer up or the driver stops responding and you get the sound loop untill you close everything and the driver restarts. The drivers that you download from Realteks site Overwrites the default windows driver and is forced to load.
Only 3 ways to fix it and only 1 way to be certain it's fixed. 1 way is to roll back to before you installed the new driver (most times this does Not work because it overwrote the default driver) OR to refresh the OS (Basically it reinstall the OS but it keeps most of your programs but you do loose everything not program related such as music,pics and midget porn movies) OR back up everything you want to save on an external or spare HDD and reinstall the whole damn thing.
Windows 10 does not tell you that the driver stopped responding and restarted like it used to in Win 7. You have to go in and digg through the logs in eventviewer. Just type in event viewer in windows search inside the start menu.