Specifications

84
Troubleshooting
Power Management-Related Symptoms
Symptom / Error Action in Sequence
The system will not enter
hibernation
Keyboard (if control is from the keyboard)
Hard disk drive
System board
The system doesn't enter
hibernation mode and four
short beeps every minute.
See “Hibernation Mode” on page 31.
Ensure the “Heuristic Power Management Mode”
in the Power Management of BIOS Setup Utility is
not set to [OFF].
Press Fn+F4 and see if the computer enters
hibernation mode.
Touchpad
Keyboard
Hard disk connection board
Hard disk drive
System board
The system doesn’t enter
standby mode after closing
the LCD
See “System Standby Mode” on page 30.
LCD cover switch
System board
The system doesn't resume
from hibernation mode.
See “Hibernation Mode” on page 31.
Hard disk connection board
Hard disk drive
System board
The system doesn't resume
from standby mode after
opening the LCD.
See “System Standby Mode” on page 23.
LCD cover switch
System board
Battery fuel gauge in
Windows doesn’t go higher
than 90%.
Remove battery pack and let it cool for 2 hours.
Refresh battery (continue use battery until power
off, then charge battery).
Battery pack
Charger board
System board
System hangs intermittently. See “Set Thermal Sensor Threshold” on page 43.
Reconnect hard disk/CD-ROM drives.
Hard disk connection board
System board