Realtek sound device not playing sound is a common Windows issue. It happens occasionally and luckily it can be solved with a little effort and in a short time period. Today in this article we will explore the most common reasons and solutions for driver malfunction for Realtek inside Windows 10. If you have this particular problem, go from step 1 to the last step since all steps are meant to go from simplest to the most complex.
All of that being said let us fix your Realtek driver issue.
The first thing would in any troubleshooting be to check are your speakers turned on or are your headphones connected and the volume or switch on them is set properly. Nothing more embarrassing than spending an hour or so troubleshooting only to find out that issue was in a malfunction of speakers or them not being turned on.
Same as the previous step where you have checked hardware, now it is time to check to see if the volume control is set properly and not by any chance muted or volume is brought all the way down.
If both hardware is functioning properly and volume control in Windows is set correctly then the issue might be in Windows not detecting device or driver malfunction. In any case, the Device Manager will be the one who will report this problem. In order to check to see if the driver is properly working press ⊞ WINDOWS + X to open the hidden start menu.

Once it opens, click on Device Manager to open it,

If you have a driver device error inside Windows, you should see it immediately when entering the Device Manager, it will have a yellow exclamation mark beside it. Right-click on it and choose update driver.
If driver update failed or you already have the latest drivers, reinstalling them could fix the issue since drivers might have corrupted during installation of some update or application. Follow steps from point 3 to get to the driver in Device Manager, then right-click on it but instead of update choose to uninstall. Reboot Windows once the driver is uninstalled and Windows will install a new one.
Check to see if the latest Windows update is installed, update your Windows if needed
If everything else fails, get DRIVERFIX, a premium solution for your PC issues, and fix driver errors.

nbtstat -R nbtstat -RR netsh int reset all netsh int ip reset netsh winsock reset
DIR /AL /S
New Microsoft storeProblem signature: Problem Event Name: BlueScreen OS Version: 6.0.6002.2.2.0.16.7 Locale ID: 1033When the error occurs, the computer screen turns blue and the user is unable to view or access the program. It is advisable to fix the error right away, virtually because BSoD is a critical PC error, it can pose serious threats to your system.
You don’t need to hire a technician or be a computer whiz to resolve Blue Screen Locale ID1033 error code. Here are some methods that you can try to resolve this error on your PC. These methods are easy to perform and result-driven.
CHKDSK [volume [[path] filename]] [/F] [/V] [/R] [/X] [/C] [: size]]Note: In the command given above, “[/F]” will try to fix the system errors while “[/R]” will be the one to fix the bad sectors.
Product Version: 1.0.0.0 Original File Name: crss.exe Entry Point: 0x000C5AAE
Stop 0X00000050 (parameter1, 0, parameter3, parameter4) PAGE_FAULT_IN_NONPAGED_AREA”
Error Causes