Important Warning: Because CoolStar distributes this driver primarily through community forums and file-sharing platforms (not official Microsoft servers), you must be extremely careful. Many fake "driver download" sites bundle malware.

Solution: Use the wushowhide.diagcab (Microsoft’s "Show or hide updates" troubleshooter) to block updates to the Intel SST driver. Alternatively, set Windows Update to not include driver updates via Group Policy (Computer Configuration > Administrative Templates > Windows Components > Windows Update).

Even with the new CoolStar driver, problems can arise. Here are the top fixes.

The CoolStar SST Audio Driver is a community-developed Windows driver designed to enable audio functionality on specific Intel-based Chromebooks that utilize the Smart Sound Technology (SST) audio controller.

Standard Windows installations do not include drivers for the custom audio hardware found in Chrome OS devices. The developer known as CoolStar created this driver to bridge that gap, allowing the speakers, headphones, and microphone to function correctly on Windows 10 (and in some cases, Windows 11).

Installing this driver is not as straightforward as running a standard .exe installer. Follow these steps precisely.