Press Refresh + Power to reboot into your custom firmware (e.g., MrChromebox UEFI) or check your Windows Device Manager under "System Devices" to locate your hardware ID. Step 2: Locate the Verified Download Sources
For your convenience, we have provided verified download links for the CoolStar SST audio driver:
The Complete Guide to CoolStar SST Audio Driver Downloads Are you trying to get sound working on your Windows-on-Chromebook installation? If you own an Intel-based Chromebook and switched the operating system to Windows, you have likely run into the infamous "No Audio Output Device Is Installed" error. coolstar sst audio driver download verified
The driver is a specialized piece of software designed to enable sound functionality on Chromebooks running Windows. Because Chromebook hardware often uses proprietary Intel Smart Sound Technology (SST) interfaces that lack official Windows support, these third-party drivers are necessary to bridge the gap. Verified Download Sources
Follow the on-screen prompts and accept the unsigned driver warning dialog. Restart your Chromebook. Method B: Manual Device Manager Update Open ( Win + X then press M ). Press Refresh + Power to reboot into your custom firmware (e
: Verify the hardware ID in Device Manager (System Devices > Intel Smart Sound Technology) to ensure the matching version is downloaded (e.g., VEN_8086&DEV_9D70 or DEV_5A98 ).
Because these are custom-made drivers, Windows will not recognize them through standard Windows Update channels. You need to prepare your system first. 1. Enable Test Signing (If Using Unsigned Drivers) The driver is a specialized piece of software
Restoring audio is a crucial step for many users converting Chromebooks to Windows. Using the can enable full functionality, including sound. Always use verified sources and check the compatibility board name before starting.
Click , name it "Before Audio Driver," and hit confirm. Step 2: Extract the Driver Files
| CPU Generation | Required CoolStar Driver | Notes | | :--- | :--- | :--- | | | Open Source SST Driver | Tested on Google Pixel 2 LS (Core i7-5500U). Requires additional binary blob file. | | Skylake / Kaby Lake | SST Audio (AVS) | Very common for 6th & 7th gen Chromebooks. Requires a $10 paid license. | | Apollo Lake / Gemini Lake | SST Audio (AVS) or SOF | Can use either driver depending on the specific firmware and hardware configuration. | | Comet Lake / Tiger Lake | SOF | Newer platforms primarily use the SOF (Sound Open Firmware) variant. | | AMD ACP 2.2 | CoolStar ACP Audio | This is a separate driver for AMD-based Chromebooks. |
After downloading the driver package, follow this detailed activation process: