What you need to do right now
If your speakers or headphones stopped working, or Windows shows a yellow exclamation mark next to an audio device in Device Manager, you likely need to install or reinstall the Realtek audio driver. The driver is the software that lets Windows talk to your sound hardware. Without it, your computer cannot produce audio.
The fastest way is to download the driver directly from Realtek's website, extract the files, and run the installer. This takes about 10 minutes total. If that does not work, Windows Update can install a basic version automatically, though it may not include all features your audio hardware supports.
Key Takeaways
- You can download the Realtek driver from Realtek's official website by finding your audio chip model number in Device Manager first.
- Extract the downloaded file to a folder, then run the installer and restart your computer when prompted.
- If you cannot find your exact chip model, Windows Update can install a generic Realtek driver that will restore basic audio.
- Uninstall the old driver through Device Manager before installing a new one if the installation fails the first time.
- A yellow exclamation mark or "Unknown Device" in Device Manager usually means the driver is missing or corrupted.
Find your Realtek audio chip model number
Before you download anything, you need to know which Realtek chip your computer has. Open Device Manager by right-clicking the Start button and selecting "Device Manager" from the menu. Look for a section called "Sound, video and game controllers" and click the arrow next to it to expand the list.
You will see your audio device listed. It might say "Realtek High Definition Audio" or "Realtek Audio" or something similar. Right-click on it and select "Properties." Click the "Details" tab, then click the dropdown that says "Property" and select "Hardware IDs." You will see a string of text that includes a model number like ALC892, ALC1220, or ALC298. Write this number down — you will need it to find the correct driver.
If you see a yellow exclamation mark next to the device or it says "Unknown Device," the driver is definitely missing. The hardware ID will still be there even without the driver installed.
Download the driver from Realtek's website
Go to Realtek's official support website at realtek.com. Look for a section labeled "Download" or "Support." You may need to search for your specific chip model number (like ALC892) in their search box.
Find the driver file for Windows — it will usually say "Windows 10" or "Windows 11" in the filename, depending on your version. Do not download audio codec files or BIOS files; you want the driver package only. Click the download button and save the file to your Downloads folder.
The file will be a .zip archive. Right-click it and select "Extract All," then choose a folder to extract to. A new folder will appear with the driver files inside. Open that folder.
Install the driver and restart
Inside the extracted folder, look for a file called "Setup.exe" or "Install.exe." Double-click it to start the installer. Windows may ask for permission — click "Yes" to allow it to run. The installer will copy files to your computer and may ask you to restart.
Let the installer finish completely. When it asks you to restart, click "Restart Now" or "OK." Your computer will reboot, and the driver will be active when Windows starts again. Do not interrupt this process or turn off your computer.
After restart, test your audio by playing a video or music file. If sound works, the driver installed correctly. If not, move to the troubleshooting section below.
Use Windows Update if you cannot find your chip model
If you looked at Realtek's website and could not find a driver for your exact chip model, or if the download link is broken, Windows Update can install a basic Realtek driver automatically. Open Settings by pressing Windows key + I, then go to "System" and click "About." Scroll down and click "Check for updates."
Windows will search for driver updates and may find a Realtek audio driver. If it does, click "Download and install." This driver will restore audio but may not include extra features like surround sound controls or equalizer settings that come with Realtek's full installer.
This method works best if you just need audio to work again and do not need advanced sound settings. If you want the full feature set later, you can always download and install Realtek's driver directly once you have the chip model number.
Uninstall the old driver if installation fails
Sometimes the new driver will not install because the old one is still partially on your system. Open Device Manager again, find your audio device, right-click it, and select "Uninstall device." A dialog will appear — check the box that says "Delete the driver software for this device" and click "Uninstall."
Restart your computer. Windows will detect the audio hardware again but will not have a driver for it, so you will see "Unknown Device" or a yellow exclamation mark. Now download and run the Realtek installer again. This time it should install without conflicts.
If you still see an error during installation, restart the computer one more time and try the installer again. Sometimes the system needs a full restart before it can load the new driver.
Verify the driver installed correctly
After installation and restart, open Device Manager one more time and expand "Sound, video and game controllers." Your audio device should now show "Realtek High Definition Audio" or similar, with no yellow exclamation mark. If it does, the driver is installed.
Right-click the device and select "Properties" again. Click the "Driver" tab and look at the "Driver Version" field. This confirms the driver is loaded and tells you which version you have. You can compare this to the version number on Realtek's website to make sure you have the latest one.
Frequently Asked Questions
Why does my audio still not work after installing the driver?
Check that your speakers or headphones are plugged in and turned on. Open the Volume mixer (right-click the speaker icon in the taskbar) and make sure the volume is not muted and is turned up. If audio still does not work, restart the computer again — sometimes the driver needs a second restart to fully activate.
Can I install Realtek driver on a laptop?
Yes, but laptop manufacturers sometimes modify the driver for their hardware. Check your laptop maker's support website first (Dell, HP, Lenovo, etc.) for a Realtek driver built for your model. If they do not have one, you can use the driver from Realtek's website, though some features may not work.
What if I see multiple audio devices in Device Manager?
Laptops and some desktops have more than one audio output. Look for the one that says "Realtek" — that is the one that needs the Realtek driver. Other devices might be HDMI audio or built-in speakers on a monitor, which use different drivers.
Do I need to uninstall the old driver before installing a new version?
Not usually. The installer will overwrite the old version automatically. Only uninstall the old driver if the new installer fails or gives an error message. Uninstalling first can sometimes cause more problems than it solves.
Where do I find the Realtek website if I cannot remember the URL?
Search "Realtek audio driver download" in your web browser. The official Realtek website will be the first result. Avoid third-party driver download sites — they sometimes bundle extra software you do not want. Always download directly from Realtek.