Power Management-Related Symptoms

Power Management-Related Symptoms

Symptom / Error

The system will not enter hibernation

The system doesn't enter hibernation mode and four short beeps every minute.

The system doesn’t enter standby mode after closing the LCD

The system doesn't resume from hibernation mode.

Action in Sequence

Keyboard (if control is from the keyboard) Hard disk drive System board 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 See “System Standby Mode” on page 30. LCD cover switch System board 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