HP Compaq Presario,Presario CQ61-411 User Manual page 10

Component
(6) Drive light
*The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The
power light on the front of the computer is visible whether the computer is open or closed.
4 Chapter 2 Components
Description
power source, the light stays off until the battery reaches a
low battery level.
Blinking: The hard drive or optical drive is being accessed.