Lenovo K49 Notebook - Manual (Page 57)

Chapter 8. Troubleshooting computer problems
This chapter provides information on what to do if you experience a problem with your computer.
Troubleshooting
To make sure that your computer has the features that are introduced in the following sections, consult the
online help or the list shipped with your computer.
Battery and power problems
This topic contains instructions on troubleshooting battery and power problems.
Battery problems
Print these instructions now and keep it with your computer for reference later.
The battery pack cannot be fully charged in the standard charge time when the computer is powered
off.
The battery pack might be over-discharged. Do the following:
1. Turn off the computer.
2. Make sure that the over-discharged battery pack is in the computer.
3. Connect the ac power adapter to the computer and let it charge.
If a quick charger is available, use it to charge the over-discharged battery pack.
If the battery pack cannot be fully charged in 24 hours, use a new battery pack.
Your computer shuts down before the battery status indicator shows empty, or your computer
operates after the battery status indicator shows empty.
Discharge and recharge the battery pack.
The operating time for a fully charged battery is short.
Discharge and recharge the battery pack. If your battery operating time is still short, use a new battery pack.
The computer does not operate with a fully charged battery.
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.
The battery cannot be charged.
You cannot charge the battery when it is too hot. If the battery feels hot, remove it from the computer and
allow it to cool to room temperature. After it cools, reinstall it and recharge the battery. If it still cannot
be charged, have it serviced.
An ac power adapter 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.
Do the following:
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