Solution: The surge protector in the battery pack might be active. Turn off the computer for one minute to reset the protector; then turn on the computer again.
•Problem: The battery pack cannot be charged.
Solution: You cannot charge the battery when it is too hot. Turn off the computer and allow it to cool to room temperature. If it still cannot be charged, call Lenovo Customer Service to have it serviced.
An 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 on the taskbar. Also the ac power indicator does not light up.
Solution: Do the following:
1.Ensure that the connection of the ac power adapter is correct. For instructions on connecting the ac power adapter, see the Safety, Warranty, and Setup Guide that comes with your computer.
2.If the connection of the ac power adapter is correct, turn off the computer, then disconnect the ac power adapter.
3.Reconnect the ac power adapter, then turn on the computer.
4.If the power adapter icon still is not displayed in the Windows notification area and the ac power indicator does not light up, have the ac power adapter and your computer serviced.
Power problems
Print these instructions now and keep it with your computer for reference later. If your computer is getting no power at all, check the following items:
1.Verify the power button. Refer to “System status indicators” on page 6. 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 the ac power source is working by attaching another device to the outlet.
If your computer does not run on battery power, do the following:
1.If the battery runs out of power, attach ac power adapter to recharge the battery.
2.If the battery is charged but the computer does not run, call Lenovo Customer Service Center to have it serviced.
A power button problem
Problem: The system does not respond, and you cannot turn off the computer.
Solution: Turn off the computer by pressing and holding the power button for four seconds or more. If the system is still not reset, remove the ac power adapter and reset the system by inserting a straightened paper clip into the emergency reset hole. To locate the emergency reset hole, refer to “Bottom view” on page 6.
Boot problems
Print these instructions now and keep them with your computer for reference later.
If you receive an error message before the operating system loads, follow the appropriate corrective actions for POST error messages.
Chapter 8. Troubleshooting computer problems 101
