Lenovo 3000 N500 Hardware Maintenance Manual page 59

When you replace the system board, you must set the UUID on the new system
board as follows:
1. Install the CE Utility Diskette for Lenovo 3000 notebooks, and restart the
computer.
2. From the main menu, select 4. Assign UUID.
A new UUID is created and written. If a valid UUID already exists, it is not
overwritten.
51
Lenovo 3000 N500