Acer Extensa 710 User Manual page 61

There is one necessary condition for the computer to enter
Standby mode:
Heuristic Power Management must be set to [ENABLED].
There are four ways to enter Standby mode:
Pressing the Standby hot key Fn-F3
If the waiting time determined by the computer's HPM
unit elapses without any system activity
Closing the display cover
When the computer is about to enter Hibernation mode
(e.g., during a battery low condition), but the
Hibernation file is invalid or not present
Note: If the computer beeps but does not enter Standby
mode after pressing the Standby hot key, it means the
operating system will not allow the computer to enter the
power-saving mode.
The following signals indicate that the computer is in
Standby mode:
The buzzer beeps
The Standby indicator lights
Warning: Unstored data is lost when you turn off the
computer power in Standby mode or when the
battery is drained.
To leave Standby mode and return to normal mode:
Press any key
Move the active pointing device (internal or external, PS/
2 or serial)
Have the Resume Timer set and let it be matched
Open the display cover
Chapter 2 Operating on Battery Power
Heuristic Power Management
41