When you flash a custom UEFI firmware (like MrChromebox) onto a Chromebook and install Windows, most hardware works automatically. However, Intel Smart Sound Technology (SST) audio controllers require specialized, proprietary drivers to route sound to the internal speakers and microphone.
Click and accept any security prompts warning you that the driver is unsigned. Step 4: Finalize the Setup
Several third‑party driver websites aggregate CoolStar SST audio driver packages. While convenient, these sites are by CoolStar, and the files they host may be outdated or unverified. Proceed with caution.
CoolStar SST Audio (WDM) Driver for Google - DriverIdentifier coolstar sst audio driver download top
If manual installation failed, use DriverHub to ensure the driver is registered properly in the system registry. Conclusion
The absolute top resource is coolstar.org/chromebook . This portal hosts the official deployment pages and individual driver listings categorized by processor generation.
Power users often share repacked versions with additional INF files for obscure OEM variants. Only use these if the stock CoolStar driver fails to install. When you flash a custom UEFI firmware (like
Follow these steps to install the driver, particularly if you are using the packages provided on CoolStar’s website. Phase 1: Preparation
A: You likely have the wrong INF file. Look for cht-sst.inf or apl-sst.inf inside the ZIP’s subfolders.
If no sound device shows up in Device Manager at all, your system firmware may be blocking the controller. Ensure you are running the latest full-ROM custom UEFI firmware available for your Chromebook platform before launching Windows. Step 4: Finalize the Setup Several third‑party driver
on GitHub. This simplifies the process for many "Lake" series processors. Manual Download : Specific driver packages, such as coolstar-sof-audio-1.0.2.0.zip , can sometimes be found via third-party repositories like DriverIdentifier
is typically distributed through:
If you have crossed the tech frontier and installed , you already know the ultimate buzzkill: the dreaded red "X" over your volume icon.
Because these are custom, third-party drivers, Windows will not install them automatically through Windows Update. You must install them manually. Step 1: Enable Test Signing Mode