Lenovo IdeaPad S10 - Manual (Page 61)

Keyboard problems
Problem: A number appears when you type a letter.
Solution: The numeric lock function is on. To disable it, press Fn + F7/NmLK .
Problem: All or some keys on the numeric keypad do not work.
Solution: Make sure that the numeric keypad is correctly connected to the computer.
Standby or hibernation problems
Problem: The computer enters standby mode (the standby indicator turns on) immediately
after Power-on self-test (POST).
Solution:
1. Make sure that:
v The battery is charged.
v The operating temperature is within the acceptable range. See “Specifications”
on page 141.
2. If these items are correct, have the computer serviced.
Chapter 4. Troubleshooting 53