This error message appears because not all drivers are digitally signed by Microsoft.
Please refer to the steps below to install drivers that are not digitally signed by Microsoft.
1. Right-click My Computer and click Properties.
2. Click Hardware and click Driver Signing.
3. Select Ignore and click OK.
4. Click OK to close the System Properties dialog box.
After installing a driver that is not digitally signed by Microsoft, sometimes the operating system will become unstable. If any problem occurs, uninstall the hardware that is newly installed and contact the hardware manufacturer.