Lenovo IdeaPad Y550P User Manual page 58

Chapter 5. Troubleshooting
Sound problems
No sound can be heard from the speaker even when the volume is
turned up.
Make sure that:
The Mute function is off.
The headphone jack is not used.
Speakers is selected as a playback device.
Battery problems
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.
The operating time for a fully charged battery is short.
For details, see "Handling the battery" in Chapter 2.
The computer does not operate with a fully charged battery.
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.
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