Acer 330 - Manual (Page 40)

40 System Introductions
There is one necessary conditions for the computer to enter Hibernation
mode:
The Hibernation file created by Sleep Manager must be present and
valid.
In this situation, there are five ways to enter Hibernation mode:
Pressing the Hibernation hot key Fn-F4
If the waiting time specified by the System Hibernation value elapses
without any system activity
If a battery low condition occurs and the Sleep Upon Battery-low
parameter in the BIOS Utility is enabled
When the advanced power button function(s) in the Notebook Manager
program is/are set to Hibernation mode
Invoked by the operating system power-saving modes
Note: If the computer beeps but does not enter Hibernation mode after
pressing the Hibernation hot key, it means the operating system
will not allow the computer to enter the power-saving mode.
To exit Hibernation mode, press the power switch. The computer also
resumes from Hibernation mode if the resume timer is set and matched.
Warning: Do not change any devices (such as add memory or swap
hard disks) when the computer is in Hibernation mode.
Sleep Mode (ACPI)
If ACPI is installed, all power management functions are handled by the
Windows operating system. In this set-up, you do not need to set timeout
values for devices before they enter a power saving mode. For more
information on ACPI, see “Advanced Configuration and Power Interface” on
page 41.
Sleep mode may be one of three computer power saving modes: standby,
hibernation or power off. Windows automatically determines which of these
modes to enter in.
To enter Sleep mode under ACPI:
Press the Sleep hot key Fn-F4.
Idle times for devices and the computer determined by Windows 98
elapses
Exiting sleep mode depends on which power saving mode the computer is
currently in.