Portable computer and power controlling method thereof

A power controlling method of a portable computer comprising a power switch, a power supply receiving electric power from one of a battery and an adapter, a central processing unit, and a system board mounted with a plurality of hardware components, comprising:

• detecting whether the electric power is supplied from the battery when the power switch is on;
• detecting remaining voltage of the battery where the battery supplies the electric power;
• and
• indicating low power of the battery with a power LED operated by driving power of a microcomputer when the remaining voltage of the battery is lower than a predetermined voltage level, and preventing the system board from being turned on.

A portable computer comprising:

• a power switch;
• a power supply receiving electric power from one of a battery and an adapter;
• a microcomputer controlling the electric power from the power supply to be supplied to a system board mounted with a central processing unit and a plurality of hardware components when the power switch is on;
• and
• a battery power indicating part being operated by a driving power of the microcomputer;
• wherein the microcomputer detects a remaining voltage of the battery if the power switch is on and the electric power is supplied from the battery, and controls the battery power indicating part to indicate low power of the battery when the remaining voltage of the battery is lower than a predetermined voltage.

A power controlling method of a portable computer comprising a power switch, a power supply receiving electric power from one of a battery or an adapter, a central processing unit, and a system board mounted with a plurality of hardware components, comprising:

• detecting whether the electric voltage is supplied from the battery when the power switch is on;
• detecting a remaining voltage of the battery where the battery supplies the electric power;
• and
• indicating low power of the battery with a power LED operated by driving power of a microcomputer when the remaining voltage of the battery is lower than a predetermined voltage level,
• maintaining a power off condition of the system board when indicating a low power condition.