Lenovo IdeaPad U450 User Manual page 57

Where are the recovery discs?
Your computer did not come with a recovery disc. For an explanation of
the alternative recovery methods offered by Lenovo, see "Chapter 4.
OneKey Rescue System" on page 39.
How can I contact the customer support center?
See "Appendix A. Getting help and service" on page 64 of this guide.
Where can I find warranty information?
For the warranty applicable to your computer, including the warranty
period and type of warranty service, see "Appendix C. Lenovo limited
warranty" on page 82.
How can I install the device drivers?
A compatible device driver is a requirement to ensure correct operation
and performance of each component in your computer. If your computer
is preinstalled with an operating system, Lenovo provides all the drivers
you need in your hard disk.
Chapter 5. Troubleshooting
43