Toshiba C55a Manual

							Video RAMThe memory in the graphics adaptor of the
computer, used to store the image displayed on a bitmap display.
The amount of Video RAM available depends on
the system memory of the computer.
Click  Control Panel -> Appearance and 
Personalization -> Display -> Adjust 
resolution  under Windows System  group in the
Apps view.
The amount of Video RAM can be verified by
clicking the  Advanced settings  button in the
Screen Resolution window.Memory moduleThe memory module is installed in the computer.Legal Footnote (Memory (Main System))
For more information regarding Memory (Main System), refer to the  Legal
Footnotes  section.Graphics Processing
UnitGraphics processing unit (GPU) performance
might vary depending on product model, design
configuration, applications, power management
settings and features utilized. GPU performance
is only optimized when operating in AC power mode and might decrease considerably when
operating in battery power mode.Legal Footnote (Graphics Processing Unit (GPU))
For more information regarding Graphics Processing Unit (GPU), refer to the  Legal Footnotes  section.
Intel®
 Display Power Saving Technology
Intel GPU models might include the Display Power Saving Technology feature that can save the power consumption of the computer by optimizing
picture contrast on the internal LCD.
This feature can be used if the computer is:
Running under battery mode
Using the internal LCD display only
The Display Power Saving Technology feature is enabled as the factory
default. If you want to turn off this feature, change it in the settings
accordingly in the Intel ®
 HD Graphics Control Panel.
You can access this control panel in the following way: 1. Right-click on the desktop and click  Graphics Properties...
User's Manual
3-11 
						

							2. Click Power and then select  On Battery from the drop-down menu
under  Power  in the upper-left corner.
3. Click  Disable under Display Power Saving Technology .
4. Click  Apply.
If you want to enable this feature, click  Enable under Display Power 
Saving Technology .
AMD ®
 Vari-Bright ™
AMD GPU models might include the AMD ®
 Vari-Bright ™
 feature that can
save the power consumption of the computer by optimizing picture contrast
on the internal LCD.
This feature can be used if the computer is:
running under battery mode
using the internal LCD display only
The Vari-Bright feature can be enabled in the AMD VISION Engine Control Center/Catalyst Control Center. You can access the center in the following way:
Right-click on the desktop and click  AMD VISION Engine Control
Center /Catalyst Control Center .
In this control panel:
1. Select  PowerPlay™  under Power.
2. Select  Enable PowerPlay™  check box, and then select the  Enable 
Vari-Bright™  check box.
If you want to improve the picture quality under the conditions mentioned above, adjust the setting towards Maximize Quality or disable this feature.
NVIDIA ®
 GeForce Experience TM
NVIDIA ®
 GeForce Experience TM
 optimizes your games by downloading
personalized graphics settings from the NVIDIA Cloud.
This feature is only provided with some models.
How to use NVIDIA ®
 GeForce Experience TM
:
1. Click  GeForce Experience  in the Apps view.
2. Under the  Preferences tab, click Games -> Check now .
3. If the supported games by NVIDIA GeForce Experience are installed, the games are listed in the  Games tab. Select the game you want to
optimize.
4. Click the  Optimize button to optimize the game.
5. Click the  Launch Game  button to start the game.
User's Manual
3-12 
						

							The NVIDIA®
 GeForce Experience TM
 can notify you of the latest
display driver updates for NVIDIA Graphics Controllers. However,
Toshiba does not guaranty compatibility of such NVIDIA drivers with
your device. TOSHIBA shall not be liable for any damage resulting from NVIDIA’s drivers. Hence, your device shall not be covered under TOSHIBA’s limited warranty. Please refer to the End User LicenseAgreement (EULA). Furthermore, TOSHIBA does not provide any
technical support for such drivers.
The NVIDIA ®
 GeForce Experience TM
 application does not optimize all
PC games. PC game support can be checked via  Preferences ->
General -> Supported games . Even if your PC game is supported,
NVIDIA Cloud might not have the data necessary to optimize your PC
game. Use  Send feedback  (bottom right of NVIDIA ®
 GeForce
Experience TM
) to provide necessary information such as device
system information, name of PC game, and so on. NVIDIA might
choose to optimize such games via the NVIDIA Cloud in the future.
Power Condition Descriptions
The computer operating capability and battery charge status are affected
by different power conditions, including whether an AC adaptor is connected and what the battery charge level is.
DC IN/Battery indicator Check the  DC IN/Battery  indicator to determine the status of the battery
pack and the power status with the AC adaptor connected. The following indicator conditions should be noted:
Flashing amberThe battery charge is low. The AC adaptor must
be connected to recharge the battery.AmberIndicates that the AC adaptor is connected and
the battery is charging.WhiteIndicates that the AC adaptor is connected and
the battery is fully charged.No lightUnder any other conditions, the indicator does not light.If the battery pack becomes too hot while it is being charged, the charge
stops and the  DC IN/Battery  indicator goes out. When the temperature of
the battery pack falls to a normal range, charging will resume. This process
occurs regardless of whether the computer's power is on or off.User's Manual 3-13 
						

							Power indicatorCheck the  Power indicator to determine the power status of the computer.
The following indicator conditions should be noted:WhiteIndicates that power is being supplied to the
computer and the computer is turned on.Flashing whiteIndicates that the computer is in Sleep Mode and that there is sufficient power available (AC
adaptor or battery) to maintain this condition.No lightUnder any other conditions, the indicator does not light.
User's Manual 3-14 
						

							Chapter 4
Operating Basics This chapter describes the basic operations of your computer, and
highlights the precautions that must be taken when using it.
Using the Touch Screen Some models are equipped with a touch screen.You can use your finger to manipulate icons, buttons, menu items, the on-
screen keyboard, and other items on the touch screen.
TapSimply tap your finger once on the touch screen
to activate an item, such as an app.Press and holdPress your finger down and leave it there for a
few seconds. This shows information to help you
learn more about an item or opens a menu
specific to what you are doing.Pinch or stretchTouch the screen or an item with two or more
fingers, and then move the fingers toward each
other (pinch) or away from each other (stretch).
This shows different levels of information or visually zooms in or out.RotatePut two or more fingers on an item and then turn
your hand to rotate things in the direction you
turn your hand. Only some items can be rotated.SlideDrag your finger on the touch screen to move through what is on the screen.
User's Manual 4-1       
						

							SwipeQuickly move your finger in from the edge of the
screen, without pausing when you first touch it.
Swipe from the left edge: shows your recently
opened apps, and so on.
Swipe from the right edge: opens or closes the charms (Search, Share, Start, Devices, Settings).
Swipe from the top edge: opens or closes the
app command bar.
For details and more advanced touch screen gestures to interact with
Windows operating system, refer to Help and Support.
Using the Touch Pad The Touch Pad located in the palm rest might support the following
gestures:
TapTap once on the Touch Pad to activate an item,
such as an app.Two-Finger TapTap once on the Touch Pad with two fingers
together to display a menu or other function
depending on the software you are using.
(Similar to right-click)Pinch or stretchPlace two or more fingers down on the Touch
Pad and move them toward each other (pinch) or
away from each other (stretch). This shows
different levels of information or visually zooms in
or out.Two-Finger ScrollPlace two fingers down and slide them vertically or horizontally from anywhere on the Touch Pad.This allows you to operate the scroll bars of a
window.
User's Manual 4-2       
						

							SwipeQuickly move your finger in from the edge of the
Touch Pad, without pausing when you first touch
it.
Swipe from the left edge: shows your recently
opened apps.
Swipe from the right edge: opens or closes the charms (Search, Share, Start, Devices, Settings).
Swipe from the top edge: opens or closes the
app command bar.Do not put items on the Touch Pad surface to prevent abnormal action.Some of the Touch Pad operations described in this section are only
supported in certain applications.
The Keyboard
The number of keys available on your keyboard depends on which country/region your computer is configured for, with keyboards being available fornumerous languages.
There are different types of keys, specifically typewriter keys, function keys, Windows special keys, and the keypad overlay.
Never remove the key caps on your keyboard. Failure to do so could
damage the parts under the key caps.
Keyboard indicator
The following figure shows the position of the  CAPS LOCK indicator and
NUM LOCK  indicator which show the following conditions:
When the CAPS LOCK  indicator glows, the keyboard produces
capitals when any letter is typed.
When the  NUM LOCK  indicator glows, the ten key allows you to enter
numbers.
User's Manual 4-3   
						

							Figure 4-1 Keypad indicators1. CAPS LOCK indicator2. NUM LOCK indicatorCAPS LOCKThis indicator glows green when letter keys are
locked into their uppercase format.NUM LOCKWhen the NUM LOCK indicator glows, you can
use the number keys on the keyboard for number
entry.
Function Keys
The function keys (F1 ~ F12) are the 12 keys at the top of your keyboard.
You can configure the function keys’ mode as "Special function mode" or
"Standard F1-F12 mode" by clicking  System Settings -> Keyboard under
TOSHIBA  group in the Apps view.
"Special function mode" allows you to use special functions without
pressing the  FN key.
Special
function modeStandard F1-
F12 modeFunctionF1FN + F1Allows you to search your computer,
the web, or within an app.F2FN + F2Decreases the brightness of the
display panel in individual steps.F3FN + F3Increases the brightness of the
display panel in individual steps.F4FN + F4Changes the active display device.
To use a simultaneous mode, you
must set the resolution of the internal
display panel to match the resolution
of the external display device.F5FN + F5Enables or disables the Touch Pad.
User's Manual 4-42
1   
						

							Special
function modeStandard F1-
F12 modeFunctionF6FN + F6Moves media backward.F7FN + F7Plays or pauses media playback.F8FN + F8Moves media forward.F9FN + F9Decreases the computer's volume.F10FN + F10Increases the computer's volume.F11FN + F11Turns the sound on or off.F12FN + F12Turns the Airplane mode on or off.FN + 1FN + 1Reduces the icon size on the desktop
or the font sizes within one of the
supported application windows.FN + 2FN + 2Enlarges the icon size on the desktop
or the font sizes within one of the
supported application windows.FN + SpaceFN + SpaceChanges the display resolution.FN + FN + Turns the keyboard backlight on or
off. This function is supported with
some models.Some functions show the toast notification at the edges of the screen.
Those toast notifications are disabled by default. You can enable them in the TOSHIBA Function Key application.
To access it, click  Function Key under TOSHIBA  group in the Apps view.
Windows special keys
The keyboard provides two keys that have special functions in Windows,
the Windows ®
 logo key activates the  Start screen while the application key
has the same function as the secondary (right) mouse button.
This key activates the Windows  Start screen.
This key has the same function as the secondary (right) mouse button.
User's Manual
4-5     
						

							Generating ASCII charactersNot all ASCII characters can be generated using normal keyboard
operation, but you can generate these characters using their specific ASCII
codes.
1. Hold down the  ALT key.
2. Using the numeric keypad, type the ASCII code of the character you require.
3. Release  ALT. The ASCII character appears on the display screen.
Optical disc drives Some models will be installed with a DVD Super Multi drive or Blu-ray™Writer drive. When the computer is accessing an optical disc, the indicator
on the drive glows.
Formats The drives support the following formats:
DVD Super Multi drive
The drive supports the following formats: CD-ROM, DVD-ROM, DVD-Video, CD-DA, CD-Text, Photo CD™ (single/multi-session), CD-ROM
Mode 1/Mode 2, CD-ROM XA Mode 2 (Form1, Form2), Enhanced CD (CD-
EXTRA), Addressing Method 2, DVD-R, DVD-RW, DVD+R, DVD+RW,
DVD-RAM, DVD-R DL (Format1), DVD+R DL.
Blu-ray™ Writer drive
In addition to the above formats, Blu-ray™ Writer drive supports BD-ROM,
BD-ROM DL, BD-R, BD-R DL, BD-RE and BD-RE DL.
Using optical disc drives The full-size drive provides high-performance execution of disc based
programs. You can run either 12 cm (4.72") or 8 cm (3.15") discs without an adaptor.
Use the DVD playback application to view DVD-Video discs.
For precautions on writing to discs, refer to the  Writing discs section.
To load discs, do the following:
1. When the computer’s power is on, press the eject button to open the disc tray slightly.
User's Manual 4-6