Lenovo M50-70 Notebook - Manual (Page 27)

Chapter 4. Troubleshooting
23
Sound problems
No sound can be heard
from the speakers even
when the volume is
turned up. • Make sure that:
- The Mute function is off.
- The combo audio jack is not being used.
- Speakers are selected as the playback device.
Battery pack problems
Your computer shuts down
before the battery status
indicator shows empty.
-or-
Your computer operates
after the battery status
indicator shows empty.
The operating time for a
fully charged battery pack
is short. • Discharge and recharge the battery pack.
The computer does not
operate with a fully
charged battery pack.
The battery pack
does not charge. • 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.
A hard disk drive problem
The hard disk drive does
not work. • Make sure that the hard disk drive is included in the Boot
menu in the BIOS setup utility correctly.
OneKey Recovery System problems
Backup cannot be made. • Make sure that you are currently using a Windows operating
system.
• There may not be enough space to store the backed-up data.
You will need to free more hard disk space on your backup's
partition.
Failure to restore system
partition to factory default. • The system partition (e.g. the partition size or the drive
capacity of C) has been modified.