Lenovo IdeaPad Y550P User Manual page 51

Chapter 5. Troubleshooting
When do I need to restore the system to the factory status?
You can use this feature when your system fails or you need to re-install
your operating system. This will restore your computer back to the initial
status when you first booted up your computer after receiving it from
the store. If there is critical data on your current partition, back it up
before you run this recovery feature.
43