If you've installed Windows on a Chromebook, you've likely discovered that the audio doesn't work out of the box. This is because the unique audio hardware found in Chromebooks (such as specific Realtek codecs like the ALC5677 and amplifiers from manufacturers like Maxim) lacks official drivers from the computer manufacturers for the Windows operating system. This is where the work of independent developer, CoolStar, comes in.
The only official distribution point is CoolStar’s GitHub repository:
If the driver downloaded as a .zip file, right-click it and select . Move the extracted folder to your desktop for easy access. Step 2: Open Device Manager
| Requirement | Detail | |-------------|--------| | | Chromebook with Intel Celeron N3350, N3450, N4000, N4100, or similar Apollo Lake / Gemini Lake CPU | | OS | Windows 10 (64-bit) or Windows 11 (64-bit) – also used in some Linux setups via ALSA | | Firmware | Custom UEFI firmware (e.g., MrChromebox) – stock ChromeOS firmware will not work | | Other | Driver signing must be enabled (default) or test mode permitted | coolstar sst audio driver download
When you install Windows on a Chromebook (a process often referred to as "Chrultrabooking"), Microsoft’s generic drivers cannot communicate with the proprietary audio routing used by Chromebook hardware. Without custom drivers, your laptop remains completely silent—no sound from the speakers, and no functionality from the headphone jack.
To understand the role of the Coolstar SST audio driver, it's helpful to first know the standard solutions it's designed to replace or augment.
You can find the official downloads and installation guides on the website. Key Installation Steps If you've installed Windows on a Chromebook, you've
The CoolStar SST Audio Driver is a testament to the power of community reverse engineering. While it requires disabling security features temporarily and comes with no official support, it has saved countless devices from the recycling bin.
Because these are custom-made enterprise-level drivers, the installation process requires a few manual steps in Windows Device Manager. Step 1: Extract the Driver Files
If your system crashes with an error pointing to the audio driver: Boot Windows into . The only official distribution point is CoolStar’s GitHub
Ensure you have CrosEC (ChromeOS Embedded Controller) and Intel SST Bus drivers installed before installing the specific audio codec driver. Verify that Test Mode is active. 2. Sound is Inverted or Only Plays on One Side
A: No. The official Intel SST driver is provided by your PC manufacturer. The Coolstar driver is a third-party, custom-developed alternative for devices where the official driver does not work or exist.
Go to > Advanced options > Startup Settings > Restart .