Unable to update to Win8.1 reason

Sorry, we were unable to update to Windows 8.1. We have restored this computer to the previous version of Windows 0xc1900101-0x40017”

Error: "Unable to update to Win8.1
may cause:
1. Antivirus software (recommended) Off or uninstall first)
2. Problematic driver
3. Some use external devices that are not compatible with wind8.1
Workaround:
1. First, please confirm whether your model supports Upgrade to Win8.1
2. It is recommended that you temporarily remove all non-Lenovo pre-installed external devices, such as mouse, keyboard, printer, camera, etc.
3. It is recommended that you back up important personal files and use the one-click recovery function to restore the computer to the factory state. Please refer to the operation method.
4. Uninstall software and drivers that may affect updates, such as anti-virus software, power management, graphics drivers, and more.
5. Install all Windows update update patches before attempting to update Win8.1 in the app store.