How to disassemble and fan cleaning laptop HP EliteBook 8440p

Features

Identifying hardware

Components included with the computer may vary by region and model. The illustrations in this chapter identify the standard features on most computer models.

To see a list of hardware installed in the computer:

  1. Select Start > Computer > System Properties.
  1. In the left pane, click Device Manager.

You can also add hardware or modify device configurations using Device Manager.

HP Elitebook 8440p User Manual 1 NOTE: Windows® includes the User Account Control feature to improve the security of your computer. You may be prompted for your permission or password for tasks such as installing software, running utilities, or changing Windows settings. Refer to Help and Support for more information.

Top components

Pointing devices

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Identifying hardware 1

ComponentHP Elitebook 8440p User Manual 5Description
(1)Pointing stickMoves the pointer and selects or activates items on the screen.
(2)Left pointing stick buttonFunctions like the left button on an external mouse.
(3)TouchPad*Moves the pointer and selects or activates items on the screen.
(4)Left TouchPad button*Functions like the left button on an external mouse.
(5)Right pointing stick buttonFunctions like the right button on an external mouse.
(6)TouchPad scroll zone*Scrolls up or down.
(7)Right TouchPad button*Functions like the right button on an external mouse.

*This table describes factory settings. To view or change pointing device preferences, select Start > Control Panel > Hardware and Sound > Mouse.
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Lights

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ComponentDescription
(1)Wireless lights (2)*●    Blue: An integrated wireless device, such as a wireless local
area network (WLAN) device, the HP Mobile Broadband
Module, and/or a Bluetooth® device, is on.
●    Amber: All wireless devices are off.
(2)Power lights (2)†●    On: The computer is on.
●    Blinking: The computer is in the Sleep state.

● Blinking rapidly: An AC adapter with a higher power rating

should be connected.

● Off: The computer is off or in Hibernation.
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*The 2 wireless lights display the same information. The light on the wireless button is visible only when the computer is open.

The wireless light on the front of the computer is visible whether the computer is open or closed.

†The 2 power lights display the same information. The light on the power button is visible only when the computer is open. The power light on the front of the computer is visible whether the computer is open or closed.
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Identifying hardware 3

Buttons, switches, and fingerprint reader

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● When the computer is on, press the button to open Software

Setup.

NOTE: If Software Setup is not available, the default Web

browser opens.
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Keys

HP Elitebook 8440p User Manual 19 NOTE: Your computer may look slightly different from the illustration in this section.
HP Elitebook 8440p User Manual 21

ComponentDescription
(1)esc keyDisplays system information when pressed in combination with the
fn key.

Identifying hardware 5

ComponentHP Elitebook 8440p User Manual 5Description
(2)fn keyExecutes frequently used system functions when pressed in
combination with a function key or the esc key.
(3)Windows logo keyDisplays the Windows Start menu.
(4)Windows applications keyDisplays a shortcut menu for items beneath the pointer.
(5)Embedded numeric keypad keysCan be used like the keys on an external numeric keypad.
(6)Function keysExecute frequently used system functions when pressed in
combination with the fn key.

Front components

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source, the light stays off until the battery reaches a low

battery level.
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6 Chapter 1 Features

Rear components

HP Elitebook 8440p User Manual 31HP Elitebook 8440p User Manual 5

ComponentDescription
(1)Security cable slotAttaches an optional security cable to the computer.
NOTE:  The security cable is designed to act as a deterrent, but
it may not prevent the computer from being mishandled or stolen.
(2)Power connectorConnects an AC adapter.
(3)DisplayPortConnects an optional digital display device such as a high-
performance monitor or projector.
(4)External monitor portConnects an external VGA monitor or projector.

Right-side components

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Identifying hardware 7

Left-side components

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ComponentDescription
(1)VentEnables 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)USB ports (3)Connect optional USB devices.
(3)1394 portConnects an optional IEEE 1394 or 1394a device, such as a
camcorder.
(4)ExpressCard slotSupports optional ExpressCards.
(5)Audio-in (microphone) jackConnects an optional computer headset microphone, stereo array
microphone, or monaural microphone.
(6)Audio-out (headphone) jackProduces sound when connected to optional powered stereo
speakers, headphones, ear buds, a headset, or television audio.

NOTE: When a device is connected to the headphone jack, the

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computer speakers are disabled.
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8 Chapter 1 Features

Bottom components

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ComponentDescription
(1)Battery bayHolds the battery.
(2)Battery release latchReleases the battery from the battery bay.
(3)SIM slot (select models only)Contains a wireless subscriber identity module (SIM). The SIM slot
is located inside the battery bay.
(4)Docking connectorConnects an optional docking device.
(5)Accessory battery connectorConnects an optional accessory battery.
(6)Vents (7)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.
(7)WWAN/WLAN module compartmentContains a WWAN module and a WLAN module (select models
only).

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 technical support through

Help and Support.
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Identifying hardware 9

ComponentHP Elitebook 8440p User Manual 5Description
(8)Business card holderHolds a business card.
(9)Memory module compartmentContains the expansion memory module slot.
(10)Hard drive bayHolds the hard drive.

Display components

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ComponentDescription
(1)Internal display switchTurns off the display and initiates Sleep if the display is closed while
the power is on.
NOTE:  The internal display switch is not visible from the outside
of the computer.
(2)Internal microphones (2)Record sound.
NOTE:  If there is a microphone icon next to each microphone
opening, your computer has internal microphones.
(3)Webcam light (select models only)On: The webcam is in use.
(4)Webcam (select models only)Records audio and video and captures still photographs.
(5)Keyboard light buttonOpens and turns the keyboard light on or off.

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Wireless antennas (select models only)

On select computer models, at least 2 antennas send and receive signals from one or more wireless devices. These antennas are not visible from the outside of the computer.
HP Elitebook 8440p User Manual 51

ComponentDescription
(1)WWAN antennas (2)* (select models only)Send and receive wireless signals to communicate with
wireless wide-area networks (WWANs).
(2)WLAN antennas (3)* (select models only)Send and receive wireless signals to communicate with
wireless local area networks (WLANs).

*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately around the antennas free from obstructions.
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To see wireless regulatory notices, refer to the section of the Regulatory, Safety and Environmental Notices that applies to your country or region. These notices are located in Help and Support.

Identifying hardware 11

Additional hardware components

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ComponentDescription
(1)Power cord*Connects an AC adapter to an AC outlet.
(2)AC adapterConverts AC power to DC power.
(3)Battery*Powers the computer when the computer is not plugged into
external power.

*Batteries and power cords vary in appearance by country or region.
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Identifying the labels

The labels affixed to the computer provide information you may need when you troubleshoot system problems or travel internationally with the computer.

  1. Service tag—Provides important information, including the following:

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  1. Product name (1). This is the product name affixed to the front of the computer.
  1. Serial number (s/n) (2). This is an alphanumeric identifier that is unique to each product.
  1. Part number/Product number (p/n) (3). This number provides specific information about the product’s hardware components. The part number helps a service technician to determine what components and parts are needed.
  1. Model description (4). This is an alphanumeric identifier used to locate documents, drivers, and support for the computer.
  1. Warranty period (5). This number describes the duration (in years) of the warranty period for the computer.

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Have this information available when you contact technical support. The service tag label is affixed to the bottom of the computer.

  1. Microsoft® Certificate of Authenticity—Contains the Windows Product Key. You may need the Product Key to update or troubleshoot the operating system. This certificate is affixed to the bottom of the computer.
  1. Regulatory label—Provides regulatory information about the computer. The regulatory label is affixed inside the battery bay.
  1. Modem approval label—Provides regulatory information about the modem and lists the agency approval markings required by some of the countries or regions in which the modem has been approved for use. You may need this information when traveling internationally. The modem approval label is affixed inside the battery bay.
  1. Wireless certification label(s) (select models only)—Provide information about optional wireless devices and the approval markings of some of the countries or regions in which the devices have been approved for use. An optional device may be a wireless local area network (WLAN) device, an HP Mobile Broadband Module, or an optional Bluetooth® device. If your computer model includes one or more wireless devices, one or more certification labels are included with your computer. You may need this information when traveling internationally. Wireless certification labels are affixed to the bottom of the computer and/or inside the battery bay.
  1. SIM (subscriber identity module) label (select models only)—Provides the ICCID (Integrated Circuit Card Identifier) of your SIM. This label is affixed to the outside packaging of the SIM (select models only) included in the box with the computer.
  1. HP Mobile Broadband Module serial number label (select models only)—Provides the serial number of your HP Mobile Broadband Module. This label is affixed to the bottom of the computer.
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Identifying the labels 13

  1. Wireless, modem, and local area network

Using wireless devices (select models only)

Wireless technology transfers data across radio waves instead of wires. Your computer may be equipped with one or more of the following wireless devices:

  1. 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, each mobile wireless device communicates with a wireless router or a wireless access point.
  1. HP Mobile Broadband Module—A wireless wide area network (WWAN) device that provides access to information wherever mobile network operator service is available. In a WWAN, each mobile device communicates to a mobile network operator’s base station. Mobile network operators install networks of base stations (similar to cell phone towers) throughout large geographic areas, effectively providing coverage across entire states, regions, or even countries.
  1. Bluetooth® device (select models only)—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.

Computers with WLAN devices support one or more of the following IEEE industry standards:

  1. 802.11b, the first popular standard, supports data rates of up to 11 Mbps and operates at a frequency of 2.4 GHz.
  1. 802.11g supports data rates of up to 54 Mbps and operates at a frequency of 2.4 GHz. An 802.11g WLAN device is backward compatible with 802.11b devices, so they can operate on the same network.
  1. 802.11a supports data rates of up to 54 Mbps and operates at a frequency of 5 GHz.

HP Elitebook 8440p User Manual 61 NOTE: 802.11a is not compatible with 802.11b and 802.11g.

  1. 802.11n supports data rates of up to 450 Mbps and may operate at 2.4 GHz or 5 GHz, making it backward compatible with 802.11a, b, and g (depending on your network configuration).

For more information on wireless technology, refer to the information and Web site links provided in Help and Support.

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Identifying wireless and network icons

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IconNameDescription
Wireless (connected)Identifies the location of the wireless lights and the wireless buttons on
the computer. Also identifies the Wireless Assistant software on the
computer and indicates that one or more of the wireless devices are on.
WirelessIndicates that all of the wireless devices are off.
(disconnected)
HP ConnectionOpens HP Connection Manager, which enables you to create a
Managerconnection with an HP Mobile Broadband device (select models only).
Network (connected)Indicates that one or more of your network drivers are installed, one or
more network devices are connected to a wireless network, and one or
more network devices may be connected to a wired network.
Network statusIndicates that one or more of your network drivers are installed, no
(disconnected)wireless connections are available or all wireless network devices are
disabled by the wireless button or Wireless Assistant, and no network
devices are connected to a wired network.

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Using the wireless controls

You can control the wireless devices in your computer using these features:

  1. Wireless button
  1. Wireless Assistant software (select models only)
  1. HP Connection Manager software (select models only)
  1. Operating system controls

Using the wireless button

The computer has a wireless button, one or more wireless devices, and two wireless lights. All of the wireless devices on your computer are enabled at the factory, so the wireless light is on (blue) 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 blue, at least one wireless device is on. If the wireless light is amber, 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. Individual wireless devices can be controlled through Wireless Assistant software (select models only) or through Computer Setup.

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HP Elitebook 8440p User Manual 19 NOTE: If the wireless devices are disabled by Computer Setup, the wireless button will not work until you reenable your devices.

Using wireless devices (select models only) 15

Using Wireless Assistant software (select models only)

A wireless device can be turned on or off using the Wireless Assistant software. If a wireless device is disabled by Computer Setup, it must be reenabled by Computer Setup before it can be turned on or off using Wireless Assistant.

HP Elitebook 8440p User Manual 77 NOTE: Enabling or turning on a wireless device does not automatically connect the computer to a network or a Bluetooth-enabled device.

To view the state of the wireless devices, position the cursor over the wireless icon in the notification area, at the far right of the taskbar.

HP Elitebook 8440p User Manual 79 NOTE: To display the Wireless icon, click the Show Hidden Icons icon (< or <<) in the notification area.

If the wireless icon is not displayed in the notification area, complete the following steps to change the

Wireless Assistant properties:

  1. Select Start > Control Panel > Mobile PC > Windows Mobility Center.
  1. Click the wireless icon in the Wireless Assistant tile, which is located in the bottom-left corner of Windows® Mobility Center.
  1. Click Properties.
  1. Select the check box next to HP Wireless Assistant icon in notification area.
  1. Click Apply.

For more information, refer to the Wireless Assistant software Help:

  1. Open Wireless Assistant by clicking the wireless icon in Windows Mobility Center.
  1. Click the Help button.

Using HP Connection Manager (select models only)

You can use HP Connection Manager to connect to WWANs using the HP Mobile Broadband device in your computer (select models only).

  1. To start Connection Manager, click the Connection Manager icon in the notification area, at the far right of the taskbar.

– or –

Select Start > All Programs > HP Connection Manager > HP Connection Manager.

For more details about using Connection Manager, refer to the Connection Manager software Help.

Using operating system controls

Some operating systems also offer a way to manage integrated wireless devices and the wireless connection. For example, Windows provides the Network and Sharing Center that allows you to set up a connection or network, connect to a network, manage wireless networks, and diagnose and repair connections.

  1. To access the Network and Sharing Center, select Start > Control Panel > Network and Internet > Network and Sharing Center.

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For more information, refer to Help and Support. Select Start > Help and Support.

Using wireless devices (select models only) 17

Using a WLAN device (select models only)

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.

HP Elitebook 8440p User Manual 77 NOTE: The terms wireless router and wireless access point are often used interchangeably.

  1. 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.
  1. 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.

HP Elitebook 8440p User Manual 83 NOTE: 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).

Setting up a WLAN

To set up a WLAN and connect to the Internet, you need the following equipment:

  1. A broadband modem (either DSL or cable) (1) and high-speed Internet service purchased from an Internet service provider (ISP)
  1. A wireless router (purchased separately) (2)
  1. The wireless computer (3)

The following illustration shows an example of a wireless network installation that is connected to the Internet.
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As your network grows, additional wireless and wired computers can be connected to the network to access the Internet.

For help in setting up your WLAN, refer to the information provided by your router manufacturer or your ISP.

Protecting your WLAN

Because the WLAN standard was designed with only limited security capabilities—basically to foil casual eavesdropping rather than more powerful forms of attack—it is essential to understand that WLANs are vulnerable to well-known and well-documented security weaknesses.

WLANs in public areas, or “hotspots,” like coffee shops and airports may not provide any security. New technologies are being developed by wireless manufacturers and hotspot service providers that make the public environment more secure and anonymous. If you are concerned about the security of your computer in a hotspot, limit your network activities to noncritical e-mail and basic Internet surfing.

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When you set up a WLAN or access an existing WLAN, always enable security features to protect your network from unauthorized access. The common security levels are Wi-Fi Protected Access (WPA) and Wired Equivalent Privacy (WEP). Because wireless radio signals travel outside the network, other WLAN devices can pick up unprotected signals and either connect to your network (uninvited) or capture information being sent across it. However, you can take precautions to protect your WLAN:

  1. Use a wireless transmitter with built-in security.

Many wireless base stations, gateways, and routers provide built-in security features such as wireless security protocols and firewalls. With the correct wireless transmitter, you can protect your network from the most common wireless security risks.

  1. Work behind a firewall.

A firewall is a barrier that checks both data and requests for data that are sent to your network and then discards any suspicious items. Firewalls are available in many varieties, both software and hardware. Some networks use a combination of both types.

  1. Use wireless encryption.

A variety of sophisticated encryption protocols is available for your WLAN. Find the solution that works best for your network security:

  1. Wired Equivalent Privacy (WEP) is a wireless security protocol that uses a WEP key to encode or encrypt all network data before it is transmitted. Usually, you can allow the network to assign the WEP key. Alternatively, you can set up your own key, generate a different key, or choose other advanced options. Without the correct key, others will not be able to use the WLAN.
  1. WPA (Wi-Fi Protected Access), like WEP, uses security settings to encrypt and decrypt data that is transmitted over the network. However, instead of using one static security key for encryptions as WEP does, WPA uses temporal key integrity protocol (TKIP) to dynamically generate a new key for every packet. It also generates different sets of keys for each computer on the network.
  1. Close your network.

If possible, prevent your network name (SSID) from being broadcast by the wireless transmitter. Most networks initially broadcast the name, telling any computer nearby that your network is available. By closing the network, other computers are less likely to know that your network exists.

HP Elitebook 8440p User Manual 87 NOTE: If your network is closed and the SSID is not broadcast, you will need to know or remember the SSID to connect new devices to the network. Write down the SSID and store it in a secure place before closing the network.

Using a WLAN device (select models only) 19

Connecting to a WLAN

To connect to the WLAN, follow these steps:

  1. Be sure that the WLAN device is on. If it is on, the wireless light is blue. If the wireless light is amber, press the wireless button.
  1. Select Start > Connect to.
  1. Select your WLAN from the list, and then type the network security key, if required.
  1. If the network is unsecured, meaning that anyone can access the network, a warning is displayed. Click Connect Anyway to accept the warning and complete the connection.
  1. If the network is a security-enabled WLAN, you are prompted to enter a network security key, which is a security code. Type the code, and then click Connect to complete the connection.

HP Elitebook 8440p User Manual 77 NOTE: If no WLANs are listed, you are out of range of a wireless router or access point.

NOTE: If you do not see the network you want to connect to, click Set up a connection or network. A list of options is displayed. You can choose to manually search for and connect to a network or to create a new network connection.

After the connection is made, place the cursor over the network status icon in the notification area, at the far right of the taskbar, to verify the name and status of the connection.

HP Elitebook 8440p User Manual 79 NOTE: The functional range (how far your wireless signals travel) depends on WLAN implementation, router manufacturer, and interference from other electronic devices or structural barriers such as walls and floors.

More information about using a WLAN is available through the following resources:

  1. Information from your ISP and the manufacturer’s instructions included with your wireless router and other WLAN equipment
  1. Information and Web site links provided in Help and Support

For a list of public WLANs near you, contact your ISP or search the Web. Web sites that list public WLANs include Cisco Internet Mobile Office Wireless Locations, Hotspotlist, and Geektools. Check with each public WLAN location for cost and connection requirements.

For additional information on connecting your computer to a corporate WLAN, contact your network administrator or IT department.

Roaming to another network

When you move your computer within range of another WLAN, Windows attempts to connect to that network. If the attempt is successful, your computer is automatically connected to the new network. If Windows does not recognize the new network, follow the same procedure you used initially to connect to your WLAN.

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To read more please download the PDFs bellow

Download HP Elitebook 8440p User Manual PDFs

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