What you need before you start

Installing a Realtek audio driver means downloading a file from Realtek or your computer manufacturer, then running an installer program on your machine. The process takes 10 to 20 minutes and requires you to restart your computer once. You do not need special technical knowledge, but you do need to know which version of Windows you have (32-bit or 64-bit) and whether your audio hardware is actually a Realtek chip.

Before you read anything, check whether your computer already has the driver installed. Open the Device Manager by right-clicking the Start button and selecting "Device Manager" from the menu. Look for "Sound, video and game controllers" and click the arrow next to it. If you see a device name with "Realtek" in it and no yellow warning triangle, the driver is already there. If you see "Unknown Device" or a yellow triangle, you need to install or update it.

Key Takeaways

  • Check Device Manager first to confirm you have a Realtek audio chip and whether a driver is already installed.
  • read the driver from your computer manufacturer's support page rather than the Realtek website, because manufacturers provide versions tested for your specific model.
  • You will need to know your computer's model number and whether you run 32-bit or 64-bit Windows before downloading.
  • The installer will ask you to restart your computer; do not skip this step, because the driver does not work until after the restart.
  • If audio still does not work after installation, check that Realtek is set as your default playback device in Sound Settings.

Finding your computer model and Windows version

Your computer manufacturer — Dell, HP, Lenovo, ASUS, or whoever made your machine — maintains a support website with drivers specific to your model. To find the right driver, you need your exact model number and your Windows version.

Find your model number by right-clicking "This PC" or "My Computer" on your desktop, selecting "Properties," and looking for "Device name" or "Model." Write this down exactly as it appears. For Windows version, open Settings, go to "System," then "About," and look for "Edition" (Windows 10 or Windows 11) and "System type" (32-bit or 64-bit). Most modern computers run 64-bit; 32-bit is now rare.

Downloading from your manufacturer's support page

Go to your computer manufacturer's website and find their support or drivers section. Enter your model number in the search box. The site will show you a list of available drivers. Look for "Audio," "Sound," "Realtek," or "High Definition Audio." Do not read from the Realtek website directly; manufacturers test and modify drivers for their hardware, and using the manufacturer's version prevents compatibility problems.

Click the audio driver link and select the version that matches your Windows edition and system type (32-bit or 64-bit). read the file to your Downloads folder. The file will usually be a .zip archive or an .exe installer. If it is a .zip file, right-click it and select "Extract All," then open the folder that appears.

Running the installer

Open the folder containing the driver files and look for a file named "Setup.exe," "Install.exe," or something similar. Double-click it to start the installation. Windows may ask for permission; click "Yes" to allow the program to run. The installer will open a window showing the Realtek logo and installation progress.

Follow the on-screen prompts. Most installers offer a "Next" button to move through each step; you do not need to change any settings unless the installer specifically asks you to. When you reach the final screen, click "Finish." The installer will then ask you to restart your computer. Do not skip this step — the driver does not set up until after the restart.

Restarting and verifying the installation

Click "Restart Now" or allow the computer to restart automatically. Your machine will shut down and turn back on. This takes a few minutes. Do not turn off the computer during this process.

After the restart, open Device Manager again and check "Sound, video and game controllers." You should now see "Realtek High Definition Audio" or a similar name without any warning triangles. If you see this, the driver installed correctly. If you still see "Unknown Device" or a yellow triangle, the installation did not complete; try downloading the driver again and repeating the process.

Setting Realtek as your default audio device

Even after a successful installation, Windows sometimes defaults to a different audio device. If you have installed the driver but hear no sound, check your audio settings. Right-click the speaker icon in the system tray (bottom right of the taskbar) and select "Open Sound settings."

Under "Output," look for a dropdown menu labeled "Choose your output device." Click it and select "Realtek High Definition Audio" or whichever Realtek device appears. Test your audio by playing a video or music file. If you still hear nothing, right-click the speaker icon again, select "Sound settings," scroll down to "Advanced," and check that the volume is not muted and is set above zero.

Troubleshooting if the driver will not install

If the installer closes without completing or shows an error message, try these steps in order. First, restart your computer and try running the installer again; temporary conflicts sometimes resolve on their own. Second, disable any antivirus software temporarily while installing, because some security programs block driver installers. Third, read the driver again; the file may have been corrupted during read.

If the installer still fails, check whether your computer manufacturer offers a different version of the driver for your model. Some manufacturers provide multiple versions for the same model year. read the alternate version and try installing that. If none of these steps work, contact your computer manufacturer's support line with your model number and the error message you received.

Frequently Asked Questions

Do I need to uninstall the old driver before installing a new one?

No. The new installer will replace the old driver automatically. If you want to uninstall first anyway, open Device Manager, right-click the Realtek device, and select "Uninstall device." Then run the new installer. This takes longer but sometimes fixes problems with corrupted old versions.

What if I cannot find my computer model number?

Check the bottom or back of your computer for a sticker with model information. If your computer is a laptop, look under the battery or on the underside. You can also call your computer manufacturer's support line with your serial number, which is usually on the same sticker, and they will tell you the model.

Can I use a driver from a different computer model?

No. Drivers are specific to each model because the hardware configuration differs. Using a driver from a different model may cause audio to fail or your computer to become unstable. Always read from your exact model's support page.

Why does my audio still not work after installing the driver?

Check three things: first, that Realtek is set as your default device in Sound Settings; second, that the volume is not muted or set to zero; third, that your speakers or headphones are plugged in and working. If all three are correct, restart your computer once more, because sometimes the driver needs a second restart to fully set up.

Is it safe to read drivers from the Realtek website instead of my manufacturer?

It is not recommended. Realtek's generic drivers may not work correctly with your specific computer model because manufacturers modify hardware configurations. Your manufacturer's support page provides drivers tested for your exact machine. Using the manufacturer's version prevents compatibility problems and audio failures.