Lenovo IdeaPad S100c Notebook - Manual (Page 45)

Appendix. CRU instructions
41
To make sure that the DDR3 SDRAM is installed correctly, do as follows:
1 Turn the computer on.
2 Hold F2 during startup. The BIOS setup utility screen opens. The System
Memory item shows the total amount of memory installed in your
computer.
The following table provides a list of CRUs (Customer Replaceable Units) for
your computer, and informs you of where to find replacement instructions.
Setup Poster User Guide
AC adapter O
Power cord for AC adapter O
Battery O O
Bottom access doors O
Hard disk drive O
Memory O