HP Probook 640 G1 K4l16ut Aba 14 Notebook User Manual

							Lights
NOTE:Refer to the illustration that most closely matches your computer.
Component Description
(1)
Power light 
●On: The computer is on.
●Blinking: The computer is in the Sleep state, a power-
saving state. The computer shuts off power to the
display and other unneeded components.
●Off: The computer is off or in Hibernation. Hibernation
is a power-saving state that uses the least amount of
power.
(2)  Caps lock light On: Caps lock is on, which switches the keys to all capital
letters.
(3)
Microphone mute light
●Amber: microphone sound is off.
●Off: microphone sound is on.
(4)  Num lock light On: Num lock is on.
(5)
Wireless light  White: An integrated wireless device, such as a wireless
local area network (WLAN) device and/or a Bluetooth®
device, is on.
NOTE:On some models, the wireless light is amber when
all wireless devices are off.
(6)
Speaker mute light
●Amber: Computer sound is off.
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							Component Description
●White: Computer sound is on.
(7)  TouchPad light 
●Amber: The TouchPad is off.
●Off: The TouchPad is on.
Component Description
(1)
Power light 
●On: The computer is on.
●Blinking: The computer is in the Sleep state, a power-
saving state. The computer shuts off power to the
display and other unneeded components.
●Off: The computer is off or in Hibernation. Hibernation
is a power-saving state that uses the least amount of
power.
(2)  Caps lock light On: Caps lock is on, which switches the keys to all capital
letters.
(3)
Microphone mute light
●Amber: microphone sound is off.
●Off: microphone sound is on.
(4)  Num lock light On: Num lock is on.
(5)
Wireless light  White: An integrated wireless device, such as a wireless
local area network (WLAN) device and/or a Bluetooth®
device, is on.
NOTE:On some models, the wireless light is amber when
all wireless devices are off.
12 Chapter 2   Getting to know your computer 
						

							Component Description
(6)
Speaker mute light
●Amber: Computer sound is off.
●White: Computer sound is on.
(7)  TouchPad light 
●Amber: The TouchPad is off.
●Off: The TouchPad is on.
Buttons, speakers, and fingerprint reader (select models only)
NOTE:Refer to the illustration that most closely matches your computer.
Component Description
(1)
Power button
●When the computer is off, press the button to turn on
the computer.
●When the computer is on, press the button briefly to
initiate Sleep.
●When the computer is in the Sleep state, press the
button briefly to exit Sleep.
●When the computer is in Hibernation, press the button
briefly to exit Hibernation.
CAUTION:Pressing and holding down the power button
will result in the loss of unsaved information.
If the computer has stopped responding and Windows®
shutdown procedures are ineffective, press and hold the
power button for at least 5 seconds to turn off the computer.
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							Component Description
To learn more about your power settings, see your power
options. From the Start screen, type power, select Power
and sleep settings, and then select Power and sleep from
the list of applications.
(2)  Speakers (2) Produce sound.
(3)
Wireless button Turns the wireless feature on or off but does not establish a
wireless connection.
(4)
Speaker mute button Mutes and restores speaker sound.
(5)  Fingerprint reader (select models only) Allows a fingerprint logon to Windows, instead of a password
logon.
Component Description
(1)
Power button
●When the computer is off, press the button to turn on
the computer.
●When the computer is on, press the button briefly to
initiate Sleep.
●When the computer is in the Sleep state, press the
button briefly to exit Sleep.
●When the computer is in Hibernation, press the button
briefly to exit Hibernation.
14 Chapter 2   Getting to know your computer 
						

							Component Description
CAUTION:Pressing and holding down the power button
will result in the loss of unsaved information.
If the computer has stopped responding and Windows®
shutdown procedures are ineffective, press and hold the
power button for at least 5 seconds to turn off the computer.
To learn more about your power settings, see your power
options. From the Start screen, type power, select Power
and sleep settings, and then select Power and sleep from
the list of applications.
(2)  Speakers (2) Produce sound.
(3)
Wireless button Turns the wireless feature on or off but does not establish a
wireless connection.
(4)
Speaker mute button Mutes and restores speaker sound.
(5)  Fingerprint reader (select models only) Allows a fingerprint logon to Windows, instead of a password
logon.
Keys
NOTE:Refer to the illustration that most closely matches your computer.
Component Description
(1) esc key Displays system information when pressed in combination
with the fn key.
(2) fn key Executes frequently used system functions when pressed
in combination with a function key, the num lk key, or the
esc key.
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							Component Description
(3)
Windows key  Returns you to the Start screen from an open app or the
Windows desktop.
NOTE:Pressing the Windows key again will return you to
the previous screen.
(4)  Function keys Execute frequently used system functions when pressed in
combination with the fn key.
(5)  Embedded numeric keypad  When the keypad is turned on, it can be used like an
external numeric keypad.
Each key on the keypad performs the function indicated by
the icon in the upper-right corner of the key.
(6)
Windows applications key Displays options for a selected object.
(7) num lk key Turns the embedded numeric keypad on and off when
pressed in combination with the fn key.
Component Description
(1) esc key Displays system information when pressed in combination
with the fn key.
(2) fn key Executes frequently used system functions when pressed
in combination with a function key, the num lk key, or the
esc key.
(3)
Windows key  Returns you to the Start screen from an open app or the
Windows desktop.
NOTE:Pressing the Windows key again will return you to
the previous screen.
(4)  Function keys Execute frequently used system functions when pressed in
combination with the fn key.
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							Component Description
(5) num lk key Alternates between the navigational and numeric functions
on the integrated numeric keypad.
(6)  Integrated numeric keypad  When num lk has been enabled, it can be used like an
external numeric keypad.
Bottom
Component Description
(1)  Vents (2) Enable airflow to cool internal components.
NOTE:The computer fan starts up automatically to
cool internal components and prevent overheating. It
is normal for the internal fan to cycle on and off during
routine operation.
(2)
Service door Provides access to the hard drive bay and the memory
module slots.
(3)
Battery release latch Releases the battery.
Battery lock latch Locks the battery in the battery bay.
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							Component Description
(4)  Service door Provides access to the wireless LAN (WLAN) module
slot.
CAUTION:To prevent an unresponsive system,
replace the wireless module only with a wireless
module authorized for use in the computer by the
governmental agency that regulates wireless devices
in your country or region. If you replace the module
and then receive a warning message, remove the
module to restore computer functionality, and then
contact support through HP Support Assistant. To
access HP Support Assistant, from the Start screen,
select the HP Support Assistant app.
(5)  Battery bay Holds the battery.
Front
Component Description
(1)
Hard drive light
●Blinking white: The hard drive is being accessed.
●Amber: HP 3D DriveGuard has temporarily
parked the hard drive.
NOTE:For more information about HP 3D
DriveGuard, see 
Using HP 3D DriveGuard
on page 55.
(2)  Memory card reader Reads optional memory cards that store, manage,
share, or access information.
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							3 Connecting to a network
Your computer can travel with you wherever you go. But even at home, you can explore the globe
and access information from millions of websites using your computer and a wired or wireless
network connection. This chapter will help you get connected to that world.
Connecting to a wireless network
Wireless technology transfers data across radio waves instead of wires. Your computer may be
equipped with one or more of the following wireless devices:
●Wireless local area network (WLAN) device—Connects the computer to wireless local area
networks (commonly referred to as Wi-Fi networks, wireless LANs, or WLANs) in corporate
offices, your home, and public places such as airports, restaurants, coffee shops, hotels, and
universities. In a WLAN, the mobile wireless device in your computer communicates with a
wireless router or a wireless access point.
●Bluetooth device—Creates a personal area network (PAN) to connect to other Bluetooth-
enabled devices such as computers, phones, printers, headsets, speakers, and cameras. In a
PAN, each device communicates directly with other devices, and devices must be relatively
close together—typically within 10 meters (approximately 33 feet) of each other.
For more information about wireless technology, see the information and website links provided in HP
Support Assistant. To access HP Support Assistant, from the Start screen, select the HP Support
Assistant app.
Using the wireless controls
You can control the wireless devices in your computer using these features:
●Wireless button, wireless switch, or wireless key (referred to in this chapter as the wireless
button)
●Operating system controls
Using the wireless button
The computer has a wireless button, one or more wireless devices, and one or two wireless lights,
depending on the model. All of the wireless devices on your computer are enabled at the factory, so
the wireless light is on (white) when you turn on the computer.
The wireless light indicates the overall power state of your wireless devices, not the status of
individual devices. If the wireless light is white, at least one wireless device is on. If the wireless light
is off, all wireless devices are off.
NOTE:On some models, the wireless light is amber when all wireless devices are off.
Because the wireless devices are enabled at the factory, you can use the wireless button to turn on or
turn off the wireless devices simultaneously.
Connecting to a wireless network 19 
						

							Using operating system controls
The Network and Sharing Center allows you to set up a connection or network, connect to a network,
and diagnose and repair network problems.
To use operating system controls:
1.From the Start screen, type control panel, and then select Control Panel.
2.Select Network and Internet, and then select Network and Sharing Center.
For more information, access HP Support Assistant. To access HP Support Assistant, from the Start
screen, select the HP Support Assistant app.
Using a WLAN
With a WLAN device, you can access a wireless local area network (WLAN), which is composed of
other computers and accessories that are linked by a wireless router or a wireless access point.
NOTE:The terms wireless router and wireless access point are often used interchangeably.
●A large-scale WLAN, such as a corporate or public WLAN, typically uses wireless access points
that can accommodate a large number of computers and accessories and can separate critical
network functions.
●A home or small office WLAN typically uses a wireless router, which allows several wireless and
wired computers to share an Internet connection, a printer, and files without requiring additional
pieces of hardware or software.
To use the WLAN device in your computer, you must connect to a WLAN infrastructure (provided
through a service provider or a public or corporate network).
Using an Internet service provider
When you are setting up Internet access in your home, you must establish an account with an
Internet service provider (ISP). To purchase Internet service and a modem, contact a local ISP. The
ISP will help set up the modem, install a network cable to connect your wireless computer to the
modem, and test the Internet service.
NOTE:Your ISP will give you a user ID and a password to use for Internet access. Record this
information and store it in a safe place.
20 Chapter 3   Connecting to a network