Lenovo B50-10 Laptop (English) User Guide - Lenovo B50-10 Laptop - Page 27
Sound problems, Battery pack problems, A hard disk drive problem, OneKey Recovery System problems
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Chapter 4. Troubleshooting Sound problems No sound can be heard from the speaker even when the volume is turned up. Battery pack problems • Make sure that: - The Mute function is off. - The combo audio jack is not being used. - Speakers are selected as the playback device. Your computer shuts down before the battery status indicator shows empty. -orYour computer operates after the battery status indicator shows empty. • Discharge and recharge the battery pack. The computer does not operate with a fully charged battery pack. • 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. 23