Lenovo C200 All-In-One - Manual (Page 53)

Chapter 8. Replacing hardware
51
Replacing the power adapter
To replace the power adapter:
1. Remove any media (diskettes, CDs, or memory cards) from the drives,
shut down your operating system, and turn off all attached devices
and the computer.
2. Disconnect the power adapter from the computer and connect the
new power adapter to the same connector.