Ac Power Adapter Problem; Power Problems - Lenovo 20HGS3KN00 User Manual

If a quick charger is available, use it to charge the over-discharged battery.
If the battery cannot be fully charged in 24 hours, use a new battery.
• Problem: The computer shuts down before the battery status icon shows that the battery is empty.
Solution: Discharge and recharge the battery.
• Problem: The computer operates after the battery status icon shows that the battery is empty.
Solution: Discharge and recharge the battery.
• Problem: The operating time for a fully charged battery is short.
Solution: Discharge and recharge the battery. If your battery operating time is still short, use a new
battery.
• Problem: The computer does not operate with a fully charged battery.
Solution: The surge protector in the battery might be active. Turn off the computer for one minute to reset
the protector; then turn on the computer again.
• Problem: The battery cannot get charged.
Solution: You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the
computer and wait for a while to let it cool to room temperature. After it cools, reinstall it and recharge the
battery. If it still cannot be charged, have it serviced.

ac power adapter problem

Problem: The ac power adapter is connected to the computer and the working electrical outlet, but the
power adapter (power plug) icon is not displayed in the Windows notification area. The ac power indicator
also does not light up.
Solution: Do the following:
1. Ensure that the connection of the ac power adapter is correct. For instructions on how to connect the ac
power adapter, see "Using the ac power adapter" on page 25.
2. If the connection of the ac power adapter is correct, turn off the computer, and then disconnect the ac
power adapter and remove the removable battery.
3. Reinstall the battery and reconnect the ac power adapter, and then turn on the computer.
4. If the power adapter icon still is not displayed in the Windows notification area, have the ac power
adapter and your computer serviced.

Power problems

Print these instructions now and keep them with your computer for reference later.
• Problem: My computer is getting no power at all.
Solution: Check the following items:
1. Verify the power button. The power button is illuminated whenever the computer is on.
2. Check all power connections. Remove any power strips and surge protectors to connect the ac
power adapter directly to the ac power outlet.
3. Inspect the ac power adapter. Check for any physical damage, and ensure that the power cable is
firmly attached to the adapter brick and the computer.
4. Verify that the ac power source is working by attaching another device to the outlet.
• Problem: My computer does not run on battery power.
Solution: Check the following items:
1. Remove and reinstall the removable battery to ensure that it is properly connected.
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Chapter 7 Troubleshooting computer problems
101