Steps to follow when corrupted Windows* Registry Keys do not allow you to uninstall Intel® Rapid Storage Technology (Intel® RST)
Cannot uninstall Intel® Rapid Storage Technology (Intel® RST) from the system when trying to remove it from the Control panel or Device Manager. Getting error message: "fatal error during installation"
Corrupted Windows* Registry keys may prevent an existing instance of Intel® Rapid Storage Technology (Intel® RST) from being completely uninstalled. In those scenarios, you may use the troubleshooter tool from Microsoft.
Go to the following Microsoft Community site for the download posted in the Answer Windows Install and Uninstall Troubleshooter Missing.
The following Microsoft support site has the details, but the download button is not working (use the above site for the download): Fix problems that block programs from being installed or removed.