HP dv4-2160us Manuel d'utilisateur Page 94
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Connecting the AC adapter
WARNING! To reduce the risk of electric shock or damage to the equipment:
Plug the power cord into an AC outlet that is easily accessible at all times.
Disconnect power from the computer by unplugging the power cord from the AC outlet (not by
unplugging the power cord from the computer).
If provided with a 3-pin attachment plug on the power cord, plug the cord into a grounded (earthed) 3-
pin outlet. Do not disable the power cord grounding pin, for example, by attaching a 2-pin adapter. The
grounding pin is an important safety feature.
To connect the computer to external AC power:
1. Plug the AC adapter into the power connector (1) on the computer.
2. Plug the power cord into the AC adapter (2).
3. Plug the other end of the power cord into an AC outlet (3).
82 Chapter 8 Power management
- Notebook PC User Guide 1
- Safety warning notice 3
- Table of contents 5
- Starting HP QuickWeb 14
- 2 Features 15
- Components 16
- Components 5 17
- 6 Chapter 2 Features 18
- Components 7 19
- 8 Chapter 2 Features 20
- Components 9 21
- Front components 22
- Rear component 22
- Right-side components 23
- Left-side components 24
- Bottom components 25
- Wireless antennas 26
- Components 15 27
- Using wireless devices 29
- Using the wireless controls 30
- Using the wireless button 31
- Using HP Wireless Assistant 31
- Using a WLAN 33
- Protecting your WLAN 34
- Connecting to a WLAN 35
- Roaming to another network 35
- Inserting a SIM 37
- Removing a SIM 38
- Cannot connect to a WLAN 40
- Network icon is not displayed 41
- WLAN connection is very weak 42
- Connecting a modem cable 43
- Selecting a location setting 44
- Using the TouchPad 48
- Setting TouchPad preferences 49
- Connecting an external mouse 49
- Using keyboard hotkeys 50
- Opening Help and Support 51
- Opening a Web browser 52
- Switching the screen image 52
- Decreasing screen brightness 53
- Increasing screen brightness 53
- Initiating Sleep 53
- Initiating QuickLock 53
- Stopping an audio CD or a DVD 54
- Using keypads 55
- 5 Multimedia 58
- Multimedia features 47 59
- Adjusting the volume 61
- Multimedia software 63
- Checking your audio functions 64
- Connecting an HDMI device 66
- Configuring audio for HDMI 67
- Troubleshooting 70
- A disc does not play 72
- Models Only) 76
- Button quick reference 77
- Button quick reference 67 79
- Button quick reference 73 85
- 8 Power management 89
- Using the battery meter 90
- Using power plans 91
- Using external AC power 93
- Connecting the AC adapter 94
- Testing an AC adapter 95
- Using battery power 96
- Charging a battery 98
- Managing low battery levels 99
- Resolving a low battery level 100
- Calibrating a battery 101
- Step 3: Discharge the battery 102
- Conserving battery power 103
- Storing a battery 103
- Disposing of a used battery 103
- Replacing the battery 103
- Shutting down the computer 104
- Handling drives 105
- Optical drive 106
- Using optical discs 107
- Selecting the right disc 108
- Playing a CD, DVD, or BD 109
- Configuring AutoPlay 110
- Changing DVD region settings 110
- Copying a CD or DVD 111
- Using external drives 114
- Using Disk Defragmenter 115
- Using Disk Cleanup 115
- Replacing the hard drive 118
- To install a hard drive: 119
- Replacing the hard drive 107 119
- 5. Close the cover (2) 120
- 108 Chapter 9 Drives 120
- Replacing the hard drive 109 121
- 10 External devices 124
- Removing a USB device 125
- Using an eSATA device 126
- Using the expansion port 127
- 11 External media cards 128
- Removing a digital card 129
- Using ExpressCards 130
- Removing an ExpressCard 132
- 12 Memory modules 133
- 16. Turn on the computer 136
- 13 Security 137
- Using passwords 138
- Administrator password 139
- Power-on password 140
- Using antivirus software 141
- Using firewall software 141
- Registering fingerprints 144
- A Setup Utility (BIOS) 146
- Using Setup Utility 147
- Displaying system information 148
- Setup Utility menus 149
- System Configuration menu 150
- Diagnostics menu 150
- B Software updates 151
- Updating the BIOS 152
- Downloading a BIOS update 153
- Updating programs and drivers 154
- C Backup and recovery 155
- Creating recovery discs 156
- Backing up your information 157
- Using system restore points 159
- Performing a recovery 160
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