Fingerprint Reader Problems; Battery And Power Problems - Lenovo ThinkPad T450s User Manual

Solution: Once the headphone is attached, the streaming is automatically redirected to it. If you want to
listen to sound from the speakers again, be sure to set those speakers as the default device. For more
information, see the help information system for Realtek HD Audio.

Fingerprint reader problems

• Problem: The surface of the reader is dirty, stained, or wet.
Solution: Gently clean the surface of the reader with a dry, soft, lint-free cloth.
• Problem: The reader often fails to enroll or authenticate your fingerprint.
Solution: If the surface of the reader is dirty, stained, or wet, gently clean the surface of the reader
with a dry, soft, lint-free cloth.
For tips on how to maintain the fingerprint reader, see "Using the fingerprint reader" on page 67.

Battery and power problems

This topic contains instructions on troubleshooting batteries and power problems.
Battery problems
• Problem: The batteries cannot be fully charged in the standard charge time when the computer is
powered off.
Solution: The batteries might be over-discharged. Do the following:
1. Turn off the computer.
2. 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 batteries.
If the batteries cannot be fully charged in 24 hours, call Lenovo Customer Service Center to have
it serviced.
• Problem: Your computer shuts down before the battery-status icon shows empty, or your computer
operates after the battery-status icon shows empty.
Solution: Discharge and recharge the batteries.
• Problem: The operating time for fully charged batteries is short.
Solution: Discharge and recharge the batteries. If your battery operating time is still short, call Lenovo
Customer Service Center to have it serviced.
• Problem: The computer does not operate with fully charged batteries.
Solution: The surge protector in the batteries might be active. Turn off the computer for one minute to
reset the protector; then turn on the computer again.
• Problem: The batteries cannot be charged.
Solution: You cannot charge the batteries when they are too hot. Turn off the computer and allow them to
cool to room temperature. After they cool, recharge the batteries. If they still cannot be charged, call
Lenovo Customer Service Center to have them 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 in the Windows notification area.
Solution: Do the following:
1. Make sure that the connection of the ac power adapter is correct. For instructions on connecting the ac
power adapter, see Safety, Warranty, and Setup Guide that comes with your computer.
.
Chapter 8 Troubleshooting computer problems
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