Hp EliteBook 840 G3 User Manual Page 52
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- TROUBLESHOOTING
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Using Battery Check
Help and Support provides information on the status of the battery installed in the computer.
To run Battery Check:
1. Connect the AC adapter to the computer.
NOTE: The computer must be connected to external power for Battery Check to work properly.
2. Select Start > All Programs > HP Help and Support > HP Support Assistant > Battery and performance
> HP Battery Check.
Battery Check examines the battery and its cells to see if they are functioning properly, and then reports the
results of the examination.
Displaying the remaining battery charge
▲
Move the pointer over the power meter icon on the Windows desktop in the notication area, at the far
right of the taskbar.
Maximizing battery discharge time
Battery discharge time varies depending on features you use while on battery power. Maximum discharge
time gradually decreases as the battery storage capacity naturally degrades.
Tips for maximizing battery discharge time:
●
Lower the brightness on the display.
●
Remove the battery on the computer when it is not being used or charged, if the computer contains a
user-replaceable battery
●
Store the user-replaceable battery in a cool, dry location.
●
Select the Power saver setting in Power Options.
Managing low battery levels
The information in this section describes the alerts and system responses set at the factory. Some low-
battery alerts and system responses can be changed using Power Options. Preferences set using Power
Options do not aect lights.
Identifying low battery levels
When a battery that is the sole power source for the computer reaches a low or critical battery level, the
following behavior occurs:
●
The battery light (select models only) indicates a low or critical battery level.
– or –
●
The power meter icon in the notication area shows a low or critical battery notication.
NOTE: For additional information about the power meter, see Using the power meter and power
settings on page 40.
If the computer is on or in the Sleep state, the computer remains briey in the Sleep state, and then shuts
down and loses any unsaved information.
42 Chapter 6 Power management
- User Guide 1
- Safety warning notice 3
- Table of contents 5
- 1 Welcome 11
- Finding information 12
- Component Description 14
- TouchPad 17
- Bottom 13 23
- 3 Connecting to a network 25
- Using a WLAN 26
- Conguring a wireless router 27
- Setting up a WLAN 27
- Protecting your WLAN 28
- Connecting to a WLAN 28
- Connecting to a wired network 31
- Using pointing devices 32
- Using pointing devices 23 33
- Scrolling 34
- 2-nger pinch zoom 34
- 2-nger click 34
- Rotating (select models only) 35
- Using the keyboard 36
- Using keypads 37
- 5 Multimedia 41
- Connecting headphones 42
- Connecting a microphone 42
- Webcam (select models only) 43
- DisplayPort 45
- 6 Power management 49
- Initiating and exiting Sleep 50
- Using battery power 51
- Using Battery Check 52
- Managing low battery levels 52
- Using external AC power 53
- Testing an AC adapter 54
- 7 External cards and devices 56
- Using smart cards 57
- Using a USB device 58
- Connecting a USB device 59
- Removing a USB device 59
- 8 Drives 61
- Using Disk Defragmenter 62
- Using Disk Cleanup 62
- 9 Security 64
- Setting passwords in Windows 65
- Setting a DriveLock password 68
- Entering a DriveLock password 69
- Changing a DriveLock password 69
- Removing DriveLock protection 69
- Using antivirus software 71
- Using rewall software 71
- 10 Maintenance 74
- Updating programs and drivers 75
- 11 Backup and recovery 76
- Backing up your information 77
- Performing a system recovery 78
- Using Computer Setup 81
- Updating the BIOS 83
- 14 Support 88
- Component 89
- (1) Serial number 89
- (2) Product number 89
- (3) Warranty period 89
- 15 Specications 90
- 16 Accessibility 91
- B Troubleshooting 93
- C Electrostatic discharge 96
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