Hp EliteBook 2740p Tablet-PC User Manual Page 88
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Resolving a low battery level
CAUTION: To reduce the risk of losing information when the computer reaches a critical battery
level and has initiated Hibernation, do not restore power until the power lights turn off.
Resolving a low battery level when external power is available
▲ Connect one of the following devices:
●
AC adapter
●
Optional expansion product or docking device
●
Optional power adapter
Resolving a low battery level when a charged battery is available
1. Turn off the computer or initiate Hibernation.
2. Remove the discharged battery, and then insert a charged battery.
3. Turn on the computer.
Resolving a low battery level when no power source is available
▲
Initiate Hibernation.
– or –
Save your work and shut down the computer.
Resolving a low battery level when the computer cannot exit Hibernation
When the computer lacks sufficient power to exit Hibernation, follow these steps:
1. Insert a charged battery or plug the computer into external power.
2. Exit Hibernation by briefly sliding the power switch to the right.
Calibrating a battery
Calibrate a battery under the following conditions:
●
When battery charge displays seem inaccurate
●
When you observe a significant change in battery run time
Even if a battery is heavily used, it should not need to be calibrated more than once a month. It is also
not necessary to calibrate a new battery.
Step 1: Fully charge the battery
WARNING! Do not charge the computer battery while you are onboard aircraft.
NOTE: The battery charges whether the computer is off or in use, but it charges faster when the
computer is off.
76 Chapter 6 Power management
- HP EliteBook 2740p User Guide 1
- Safety warning notice 3
- Table of contents 5
- 1Features 13
- 2 Chapter 1 Features 14
- Identifying hardware 3 15
- Buttons and switches 16
- Identifying hardware 5 17
- Front components 18
- Right-side components 19
- Left-side components 20
- Rear components 21
- Bottom components 22
- Identifying hardware 11 23
- 12 Chapter 1 Features 24
- Identifying the labels 25
- 2 Using the tablet 27
- Rotating the display 28
- Notebook mode 30
- Rotating the display 19 31
- 3Networking 32
- Using the wireless controls 33
- Using the wireless button 33
- Using a WLAN 35
- Connecting to a WLAN 37
- Roaming to another network 37
- Inserting a SIM 38
- Removing a SIM 39
- 28 Chapter 3 Networking 40
- WLAN connection is very weak 44
- Connecting a modem cable 45
- Selecting a location setting 46
- Using pointing devices 50
- Using the pen 53
- Pressure sensitivity 54
- Calibrating the pen 55
- Using the pen holder 55
- Setting pen preferences 56
- Tapping (or clicking) 56
- Flicking 56
- Dragging 57
- Scrolling 57
- Rotating 58
- Pinching 59
- Using touch screen settings 60
- Using the keyboard 61
- Using hotkeys 63
- Initiating Sleep 65
- Switching the screen image 65
- Decreasing screen brightness 66
- Increasing screen brightness 66
- Using HP Quick Launch Buttons 67
- Using HP QuickLook 68
- Using HP QuickWeb 68
- 5 Multimedia 70
- Multimedia software 71
- Checking your audio functions 73
- Webcam tips 76
- Adjusting webcam properties 76
- 6 Power management 79
- Using the battery meter 80
- Using power plans 80
- Customizing power plans 81
- Using external AC power 82
- Using battery power 83
- Using Battery Check 84
- Charging a battery 85
- Managing low battery levels 86
- Calibrating a battery 88
- Step 3: Discharge the battery 89
- Conserving battery power 91
- Storing a battery 91
- Disposing of a used battery 92
- Replacing the battery 92
- Testing an AC adapter 93
- Shutting down the computer 93
- Identifying installed drives 95
- Handling drives 95
- Using Disk Defragmenter 97
- Using Disk Cleanup 97
- Using HP 3D DriveGuard 98
- 8. Replace the battery 103
- 10. Turn on the computer 103
- 8 External devices 104
- Using USB legacy support 105
- Using a 1394 device 106
- 4. Remove the device 107
- Using a 1394 device 95 107
- Using external drives 108
- Using the docking connector 109
- 9 External media cards 110
- Configuring an ExpressCard 112
- Inserting an ExpressCard 112
- Inserting a smart card 114
- Removing a smart card 115
- 10 Memory modules 116
- 11 Security 120
- Using passwords 121
- BIOS administrator password 122
- Setting a DriveLock password 125
- Entering a DriveLock password 126
- Changing a DriveLock password 127
- Removing DriveLock protection 128
- Securing system devices 130
- Using antivirus software 132
- Using firewall software 133
- Installing critical updates 134
- Installing a security cable 136
- 12 Software updates 137
- Updating the BIOS 139
- Downloading a BIOS update 140
- The BIOS installation begins 141
- Updating the BIOS 129 141
- Updating programs and drivers 142
- 13 Backup and recovery 143
- Backing up your information 144
- Performing a recovery 145
- Using f11 146
- 14 Computer Setup 147
- Computer Setup menus 148
- File menu 149
- Security menu 149
- System Configuration menu 150
- Computer Setup menus 139 151
- Computer Setup menus 141 153
- 15 MultiBoot 155
- 16 Management and printing 161
- Enabling the iAMT solution 166
- Change Intel ME Password 167
- 17 Cleaning guidelines 169
- Cleaning procedures 170
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