The battery in the computer will not charge it just shows that it is plug in.

If your computer's battery is not charging and it only shows that it is plugged in, there are a few potential issues to consider:

1. Battery Charging Management: The battery charging is managed autonomously by the hardware. If the system is connected to a charger, it should charge unless there is a battery failure or a thermal condition affecting charging.
2. Fault Conditions: Charging will stop automatically when the battery is fully charged or if there is a fault condition. If the battery is not charging, it could be due to a fault in the battery itself or in the charging system.
3. Power Source: Ensure that the charger is functioning properly and that the connection is secure. Sometimes, using a different power outlet or a different charger can help determine if the issue lies with the charger.
4. Thermal Conditions: If the system is experiencing thermal issues, charging may be limited or halted to protect the hardware.
5. Battery Health: If the battery is old or has gone through many charge cycles, it may not hold a charge effectively anymore and may need to be replaced.

If these steps do not resolve the issue, it may be necessary to consult with a technician or consider replacing the battery if it is faulty.

References:

• User experience principles for battery charging
• Platform requirements and motivation