HP Elitebook 840 G2 P0c57ut Aba 14 Notebook User Manual

							To test the AC adapter:NOTE:The following instructions apply to computers with user-replaceable batteries.
1.Shut down the computer.
2.Remove the battery on the computer.
3.Connect the AC adapter to the computer, and then plug it into an AC outlet.
4.Turn on the computer.
●If the power lights turn on, the AC adapter is working properly.
●If the power lights remain off, the AC adapter is not functioning and should be replaced.
Contact support for information on obtaining a replacement AC power adapter.
Switchable graphics/dual graphics (select models only)
Select computers are equipped with either switchable graphics or dual graphics.
●Switchable graphics—Supported by both AMD™ and Intel. If your computer has AMD dynamic 
switchable graphics, it supports only switchable graphics.
●Dual graphics—Supported only by AMD. If your computer has AMD Radeon dual graphics, it supports  only dual graphics.
NOTE:Dual graphics can be enabled only by full-screen applications that use DirectX version 10 or 11.NOTE:To determine whether your computer supports switchable graphics or dual graphics, see your 
notebook graphics processor configuration. Intel HR Central Processing Units (CPUs) and AMD Trinity series 
Accelerated Processing Units (APUs) support switchable graphics. AMD Trinity series A6, A8, and A10 APUs 
support dual graphics. AMD Trinity series A4 APUs do not support dual graphics.
Both switchable graphics and dual graphics offer two modes for processing graphics:
●Performance mode—Runs application with optimal performance.
●Power Saving mode—Conserves battery life.
To manage your AMD graphics settings:
1.Open the Catalyst Control Center by right-clicking on the Windows desktop, and then select Configure 
Switchable Graphics
.
2.Click the Power tab, and then select Switchable Graphics.
Using switchable graphics (select models only)
Switchable graphics allow you to switch between Performance mode and Power Saving mode.
To manage your switchable graphics settings:
1.Right-click on the Windows desktop, and then select Configure Switchable Graphics.
2.Click the Power tab, and then select Switchable Graphics.
Switchable graphics assigns individual applications to either Performance mode or Power Saving mode, 
based on power requirements. You can also manually modify the settings for an individual application by 
locating the application under 
Recent Applications drop-down menu, or by clicking Browse, located below 
Other Applications. You can switch between Performance mode and Power Saving mode.
Setting power options49    
						

							NOTE:For more information, see the switchable graphics software Help.
Using dual graphics (select models only)
If your system is equipped with dual graphics (two or more added Graphics Processing Units (GPUs)), you can 
enable AMD Radeon Dual Graphics to increase application power and performance for full-screen 
applications that use DirectX version 10 or 11. For more information about DirectX, go to 
http://www.microsoft.com/directx.
NOTE:Dual graphics systems only support automatic selection based on power requirements (Dynamic 
scheme), and automatically assign Performance mode or Power Saving mode for individual applications. 
However, you can manually modify the settings for a particular application.
To enable or disable AMD Radeon Dual Graphics, select or deselect the check box in the AMD Radeon Dual 
Graphics section, which is located in the 
Performance tab in the Catalyst Control Center.
NOTE:For more information, see the AMD software Help.50Chapter 6   Power management    
						

							7External cards and devices
Using memory card readers (select models only)
Optional memory cards provide secure data storage and convenient data sharing. These cards are often used with digital media–equipped cameras and PDAs as well as with other computers.
Inserting a memory card
CAUTION:To reduce the risk of damage to the memory card connectors, use minimal force to insert a 
memory card.
1.Hold the card label-side up, with the connectors facing the computer.
2.Insert the card into the memory card reader, and then press in on the card until it is firmly seated.
You will hear a sound when the device has been detected, and a menu of options may be displayed.
Removing a memory card
CAUTION:To reduce the risk of loss of data or an unresponsive system, use the following procedure to 
safely remove the memory card.
1.Save your information and close all programs associated with the memory card.
2.Click the remove hardware icon on the Windows desktop in the notification area, at the far right of the 
taskbar. Then follow the on-screen instructions.
Using memory card readers (select models only)51   
						

							3.Pull gently on the card to remove it from the slot.NOTE:If the card does not eject, pull the card out of the slot. 
Using smart cards (select models only)
NOTE:The term smart card is used throughout this chapter to mean both smart cards and Java™ Cards.
A smart card is a credit card-sized accessory that carries a microchip containing memory and a 
microprocessor. Like personal computers, smart cards have an operating system to manage input and 
output, and they include security features to protect against tampering. Industry-standard smart cards are 
used with the smart card reader (select models only).
A PIN is needed to gain access to the contents of the microchip. For more information about smart card 
security features, access Help and Support by selecting 
Start > Help and Support.
52Chapter 7   External cards and devices   
						

							Inserting a smart card
1.Hold the card label-side up, and gently slide the card into the smart card reader until the card is seated.
2.Follow the on-screen instructions for logging on to the computer using the smart card PIN.
Removing a smart card
▲Grasp the edge of the smart card, and then pull it out of the smart card reader.
Using a USB device
Universal Serial Bus (USB) is a hardware interface that can be used to connect an optional external device, 
such as a USB keyboard, mouse, drive, printer, scanner, or hub.
Some USB devices may require additional support software, which is usually included with the device. For 
more information about device-specific software, see the manufacturer's instructions. These instructions 
may be provided with the software, on disc, or on the manufacturer’s website.
The computer has at least 1 USB port that supports USB 1.0, 1.1, 2.0, or 3.0 devices. Your computer may also 
have a USB charging port that provides power to an external device. An optional docking device or USB hub 
provides additional USB ports that can be used with the computer.
Using a USB device53 
						

							Connecting a USB deviceCAUTION:To reduce the risk of damage to a USB connector, use minimal force to connect the device.
▲Connect the USB cable for the device to the USB port.
NOTE:The following illustration may look slightly different than your computer.
You will hear a sound when the device has been detected.
NOTE:The first time you connect a USB device, a message in the notification area lets you know that the 
device is recognized by the computer.
Removing a USB device
CAUTION:To reduce the risk of damage to a USB connector, do not pull on the cable to remove the USB 
device.CAUTION:To reduce the risk of loss of information or an unresponsive system, use the following procedure 
to safely remove the USB device.
1.To remove a USB device, save your information and close all programs associated with the device.
2.Click the remove hardware icon on the Windows desktop in the notification area, at the far right of the 
taskbar, and then follow the on-screen instructions.
3.Remove the device.
Using optional external devices
NOTE:For more information about required software and drivers, or to learn which computer port to use, 
see the manufacturer's instructions.
To connect an external device to the computer:
CAUTION:To reduce the risk of damage to the equipment when connecting a powered device, be sure that 
the device is turned off and the AC power cord is unplugged.54Chapter 7   External cards and devices       
						

							1.Connect the device to the computer.
2.If you are connecting a powered device, plug the device power cord into a grounded AC outlet.
3.Turn on the device.
To disconnect an unpowered external device, turn off the device, and then disconnect it from the computer. 
To disconnect a powered external device, turn off the device, disconnect it from the computer, and then 
unplug the AC power cord.
Using optional external drives
Removable external drives expand your options for storing and accessing information. A USB drive can be 
added by connecting the drive to a USB port to the computer.
NOTE:HP external USB optical drives should be connected to the powered USB port to the computer.
USB drives include the following types:
●1.44-megabyte diskette drive
●Hard drive module
●External optical drive (CD, DVD, and Blu-ray)
●MultiBay device
Using the expansion port (select models only)
The expansion port connects the computer to an optional docking or expansion device, so that additional 
ports and connectors can be used with the computer.
Using optional external devices55  
						

							8Drives
Handling drives
CAUTION:Drives are fragile computer components that must be handled with care. Refer to the following 
cautions before handling drives. Do not drop a drive, place items on it, or expose it to liquids, or temperature 
or humidity extremes.
Observe these precautions when handling drives:
●Before removing or installing a drive, shut down the computer. If you are unsure whether the computer 
is off, in the Sleep state, or in Hibernation, turn the computer on, and then shut it down.
●Before handling a drive, discharge static electricity by touching a grounded surface.
●Do not touch the connector pins on a removable drive or on the computer.
●Do not use excessive force when inserting a drive into a drive bay.
●If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective packaging  and label the package “FRAGILE.”
●Avoid exposing a drive to magnetic fields. Security devices with magnetic fields include airport walk-
through devices and security wands. Airport conveyer belts and similar security devices that check 
carry-on baggage use X-rays instead of magnetism and do not damage drives.
●Remove media from a drive before removing the drive from the drive bay, or traveling with, shipping, or 
storing a drive.
●Do not type on the keyboard or move the computer while an optical drive is writing to a disc. The write  process is sensitive to vibration.
●Before you move a computer that is connected to an external hard drive, initiate Sleep and allow the 
screen to clear, or properly disconnect the external hard drive.
Using hard drives
CAUTION:To prevent information loss or an unresponsive system:
Save your work and shut down the computer before adding or replacing a memory module or hard drive.
If you are not sure whether the computer is off, turn the computer on by pressing the power button. Then 
shut down the computer through the operating system.
Intel Smart Response Technology (select models only)
Intel® Smart Response Technology (SRT) is an Intel® Rapid Storage Technology (RST) caching feature that 
significantly enhances computer system performance. SRT allows computers with an SSD mSATA module to 
be used as cache memory between the system memory and hard disk drive. This provides the advantage of 
having a hard disk drive (or a RAID volume) for maximum storage capacity while simultaneously delivering 
SSD enhanced system performance experience.
If you add or upgrade a hard drive and intend to set a RAID volume, you must temporarily disable SRT, set the 
RAID volume, and then enable SRT. To temporarily disable SRT:
56Chapter 8   Drives   
						

							1.Select Start > All Programs > Intel > Intel Rapid Storage Technology.
2.Click the Acceleration link, and then click the Disable Acceleration link.
3.Wait for the Acceleration Mode to complete.
4.Click the Reset to Available link.
IMPORTANT:You must temporarily disable SRT when changing RAID modes. Make the change and then re-
enable SRT. Failure to temporarily disable this feature will prevent you from creating or changing RAID 
volumes.NOTE:HP does not support SRT with self-encrypting drives (SEDs).
Removing or replacing the service door
Removing the service door
Remove the service door to access the memory module slot, hard drive, and other components.
1.Remove the battery (see Removing a battery on page 46).
2.With the battery bay toward you, slide the service door release latch (1) to the left, remove the screw (if 
the optional screw is being used) 
(2), and then slide the release latch again (3) to release the service 
door.
NOTE:If you do not want to use the optional screw, you can store it inside the service door.Using hard drives57    
						

							3.Slide the service door toward the front of the computer (4) and lift (5) to remove the service door.
Replacing the service door
Replace the service door after accessing the memory module slot, hard drive, regulatory label, and other components.
1.Tilt down the service door to align the front edge of the service door near the front edge of the 
computer 
(1).
2.Insert the alignment tabs (2) on the rear edge of the service door with the notches on the computer.
3.Slide the service door toward the battery bay until the service door snaps into place.
58Chapter 8   Drives