HP Probook 640 G1 K4l16ut Aba 14 Notebook User Manual

Labels
The labels affixed to the computer provide information you may need when you troubleshoot system
problems or travel internationally with the computer:
IMPORTANT:All labels described in this section will be located in one of 3 places depending on
your computer model: affixed to the bottom of the computer, located in the battery bay, or under the
service door.
●Service label—Provides important information to identify your computer. When contacting
support, you will probably be asked for the serial...

14 Specifications
●Input power
●
Operating environment
Input power
The power information in this section may be helpful if you plan to travel internationally with the
computer.
The computer operates on DC power, which can be supplied by an AC or a DC power source. The
AC power source must be rated at 100–240 V, 50–60 Hz. Although the computer can be powered
from a standalone DC power source, it should be powered only with an AC adapter or a DC power
source supplied and approved by HP for use with this...

A Traveling with the computer
For best results, follow these traveling and shipping tips:
●Prepare the computer for traveling or shipping:
◦Back up your information.
◦Remove all discs and all external media cards, such as memory cards.
CAUTION:To reduce the risk of damage to the computer, damage to a drive, or loss of
information, remove the media from a drive before removing the drive from a drive bay and
before shipping, storing, or traveling with a drive.
◦Turn off and then disconnect all external...

B Troubleshooting
Troubleshooting resources
●Access website links and additional information about the computer through HP Support
Assistant. To access HP Support Assistant, from the Start screen, select the HP Support
Assistant app.
NOTE:Some checkup and repair tools require an Internet connection. HP also provides
additional tools that do not require an Internet connection.
●Contact HP support. For U.S. support, go to http://www.hp.com/go/contactHP. For worldwide
support, go to...

change these and other power settings, right-click the Battery icon on the Windows desktop in
the notification area, at the far right of the taskbar, and then click Preferences.
●The computer may not be set to display the image on the computer screen. To transfer the
image to the computer screen, press fn+f4. On most models, when an optional external display,
such as a monitor, is connected to the computer, the image can be displayed on the computer
screen or the external display, or on both devices...

●Be sure that the device, especially if it is older, is compatible with the operating system.
●Be sure that the correct drivers are installed and updated.
The wireless network connection is not working
If a wireless network connection is not working as expected, follow these suggestions:
●To enable or disable a wireless or wired network device, right-click the Network Connection icon
on the Windows desktop in the notification area, at the far right of the taskbar. To enable
devices, select the check box...

NOTE:When using both displays, the DVD image will not appear on any display designated as
the secondary display.
The process of burning a disc does not begin, or it stops before completion
●Be sure that all other programs are closed.
●Turn off Sleep mode.
●Be sure that you are using the right kind of disc for your drive.
●Be sure that the disc is inserted properly.
●Select a slower write speed and try again.
●If you are copying a disc, save the information on the source disc to your hard drive before...

C Electrostatic discharge
Electrostatic discharge is the release of static electricity when two objects come into contact—for
example, the shock you receive when you walk across the carpet and touch a metal door knob.
A discharge of static electricity from fingers or other electrostatic conductors may damage electronic
components. To prevent damage to the computer, damage to a drive, or loss of information, observe
these precautions:
●If removal or installation instructions direct you to unplug the...

Index
Symbols/Numerics
2-finger click TouchPad gesture
27
2-finger pinch zoom TouchPad
gesture 26
A
AC adapter, testing 45
AC adapter/battery light 6, 7
administrator password 57
airport security devices 50
antivirus software 63
audio 34
audio functions, checking 35
audio-in (microphone) jack,
identifying 4, 5
audio-out (headphone) jack,
identifying 4, 5
Automatic DriveLock  62
Automatic DriveLock password
entering 62
removing 62
B
battery
conserving power 44
discharging 42
displaying remaining charge...

G
graphics
switchable/dual graphics 46
H
hard drive
external 49
HP 3D DriveGuard 55
installing 53
removing 52
hard drive light 18, 55
hard drive recovery 71
hard drive, identifying 17, 18
HDMI port, connecting 37
HDMI port, identifying 6, 7
HDMI, configuring audio 37
headphone (audio-out) jack 4, 5
headphones and microphones,
connecting 34
Hibernation
exiting 40
initiating 40
high-definition devices,
connecting 37
hot keys
adjusting volume 30
decrease screen brightness
30
decreasing speaker sound 30...