HP Probook 640 G1 K4l16ut Aba 14 Notebook User Manual

Using keypads
The computer includes an embedded numeric keypad or an integrated numeric keypad. The
computer also supports an optional external numeric keypad, or an optional external keyboard that
includes a numeric keypad.
Using the embedded numeric keypad (select models only)
Component Description
(1)fn key Turns the embedded numeric keypad on and off when pressed
in combination with the num lk key.
NOTE:The embedded numeric keypad will not function while
an external keyboard or numeric keypad is...

Turning the embedded numeric keypad on and off
Press fn+num lk to turn on the embedded numeric keypad. Press fn+num lk again to turn off the
keypad.
NOTE:The embedded numeric keypad is turned off while an external keyboard or numeric keypad
is connected to the computer.
Switching key functions on the embedded numeric keypad
You can temporarily alternate the functions of keys on the embedded numeric keypad between their
standard keyboard functions and their keypad functions:
●To use the navigational...

To turn num lock on or off on an external keypad as you work:
▲Press the num lk key on the external keypad, not on the computer.
Using the keyboard 33 

5 Multimedia
Your computer may include the following:
●Integrated speaker(s)
●Integrated microphone(s)
●Integrated webcam
●Preinstalled multimedia software
●Multimedia buttons or keys
Audio
On your HP computer, you can play music CDs, download and listen to music, stream audio content
from the web (including radio), record audio, or mix audio and video to create multimedia. To
enhance your listening enjoyment, attach external audio devices such as speakers or headphones.
Connecting speakers
You can...

To connect wireless headphones or headsets to your computer, follow the device manufacturer's
instructions.
WARNING!To reduce the risk of personal injury, lower the volume setting before putting on
headphones, earbuds, or a headset. For additional safety information, see the 
Regulatory, Safety and
Environmental Notices
. To access this guide, from the Start screen, type support, and then select
the HP Support Assistant app.
Checking audio functions on the computer
NOTE:For best results when...

To enhance your viewing enjoyment, use one of the video ports on the computer to connect an
external monitor, projector, or TV. Your computer has a high-definition multimedia interface (HDMI)
port, which allows you to connect a high-definition monitor or TV.
Your computer has one or more of the following external video ports:
●VGA
●HDMI (High Definition Multimedia Interface)
IMPORTANT:Be sure that the external device is connected to the correct port on the computer,
using the correct cable. Check the...

HDMI
The HDMI port connects the computer to an optional video or audio device, such as a high-definition
television, or to any compatible digital or audio component.
NOTE:To transmit video and/or audio signals through the HDMI port, you need an HDMI cable
(purchased separately).
One HDMI device can be connected to the HDMI port on the computer. The information displayed on
the computer screen can be simultaneously displayed on the HDMI device.
To connect a video or audio device to the HDMI port:...

1.From the Windows desktop, right-click the Speakers icon in the notification area, at the far right
of the taskbar, and then click Playback devices.
2.On the Playback tab, click either Digital Output or Digital Output Device (HDMI).
3.Click Set Default, and then click OK.
To return audio to the computer speakers, follow these steps:
1.From the Windows desktop, right-click the Speakers icon in the notification area, at the far right
of the taskbar, and then click Playback devices.
2.On the Playback tab,...

6 Power management
NOTE:A computer may have a power button or a power switch. The term power button is used
throughout this guide to mean both types of power controls.
Shutting down the computer
CAUTION:Unsaved information is lost when the computer shuts down.
The shutdown command closes all open programs, including the operating system, and then turns off
the display and computer.
Shut down the computer under any of the following conditions:
●When you need to replace the battery or access components...

When Sleep is initiated, the power lights blink and the screen clears. Your work is saved to memory. 
CAUTION:To reduce the risk of possible audio and video degradation, loss of audio or video
playback functionality, or loss of information, do not initiate Sleep while reading from or writing to a
disc or an external memory card. 
NOTE:You cannot initiate any type of networking connection or perform any computer functions
while the computer is in the Sleep state.
Initiating and exiting Sleep
With the...