Toshiba C55a Manual

							Check all cables to ensure that they are correctly and firmly attachedto the computer - loose cables can cause signal errors.
Inspect all connecting cables for loose wires and all connectors forloose pins.
Check that your disc media is correctly loaded
Always try to make detailed notes of your observations and keep them in a permanent error log - this helps you to describe your problems to TOSHIBASupport. In addition, if a problem recurs, the log you have made helps to
identify the problem faster.
Analyzing the problem Sometimes the computer gives you clues that can help you identify why it
is malfunctioning. In view of this, keep the following questions in mind:
Which part of the computer is not operating properly - keyboard, Hard
Disk Drive, display panel, Touch Pad, Touch Pad control buttons - as
each device produces different symptoms.
Check the options within the operating system to ensure that its
configuration is set properly.
What appears on the display? Does it display any messages or random characters? Make a screenshot of the current display and, ifpossible, look up the messages in the documentation included with the
computer, software, or operating system.
Check that all connecting cables are correctly and firmly attached as
loose cables can cause erroneous or intermittent signals.
Do any indicators light, if so, which ones, what color are they and do
they stay on or blink? Write down what you see.
Do you hear any beeps, if so how many, are they long or short and are
they high pitched or low pitched? In addition, is the computer making
any unusual noises? Write down what you hear.
Record your observations so you can describe them in detail to TOSHIBA Support.
SoftwareThe problems might be caused by your software
or disk. If you cannot load a software package, the media might be damaged or the program
might be corrupted. In these instances, try
loading another copy of the software if possible.
If an error message appears while you are using
a software package, you should refer to the
documentation supplied with it as this usually
includes a problem-solving section or a summary
of error messages.
Next, check any error messages against the
operating system documentation.
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							HardwareIf you cannot find a software problem, you should
then check the setup and configuration of your
hardware. First run through the items in the
preliminary checklist as described previously
then, if you still cannot correct the problem, try to identify the source. The next section provideschecklists for individual components and
peripherals.Before using a peripheral device or application software that is not an authorized TOSHIBA part or product, make sure that the device or softwarecan be used with your computer. Use of incompatible devices might cause
injury or might damage your computer.
If something goes wrong
Your computer does not respond to the keyboard commands
If an error occurs and the computer does not respond to your keyboard
commands, do the following:
Press the power button and hold it down for five seconds. Once the computer has turned itself off, wait 10–15 seconds before turning on the
power again by pressing the power button.
Your program stops responding
If you are working with a program that suddenly freezes all operations, chances are the program has stopped responding. You can exit the failedprogram without shutting down the operating system or closing other
programs.
To close a program that has stopped responding:
1. Press  CTRL, ALT , and  DEL simultaneously (once), then click  Task 
Manager . The Windows Task Manager window appears.
2. Select the program you want to close, then click  End Task. Closing
the failed program should allow you to continue working. If it does not,
continue with the next step.
3. Close the remaining programs one by one by selecting the program name, then  End Task. Closing all programs should allow you to
continue working. If it does not, power off your computer and then restart it.
The computer does not start
Make sure that you attached the AC adaptor and power cord/cable
properly.
If you are using the AC adaptor, check that the wall outlet is working by
plugging in another device, such as a lamp.
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							Verify that the computer is on by looking at the Power indicator.
If the indicator is glowing, the computer is on. Also, try turning the computer
off and then on.
If you are using an AC adaptor, verify that the computer is receiving power
from the external power source by looking at the  DC IN/Battery indicator. If
the indicator is glowing, the computer is connected to a live external power
source.
The computer does not load advanced options during startup
By holding down one of the following keys during startup, your computer
can load the following advanced options.
KeyAdvanced optionF2TOSHIBA Setup UtilityF12Boot menu0 (zero)Recovery options
If your computer starts to load the Operating System instead of desired
advanced options, do the following:
1. Click the power icon ( 
 ) on the Start screen and then select
Restart .
2. Hold down the corresponding key and then release this key one second after the computer is power on.
3. Follow the on-screen instructions to proceed.
Hardware and system checklist This section discusses problems caused by your computer’s hardware or
attached peripherals. Basic problems might occur in the following areas:
Power
Keyboard
Internal display panel
Hard Disk Drive
Optical Disc Drive
Memory Media Card
Pointing Device
USB device
Sound system
External monitor
LAN
Wireless LAN
Bluetooth
Power
When the computer is not plugged into an AC power outlet, the batterypack is the primary power source. Your computer also has Real-Time Clock (RTC) function. All of the power resources are interrelated with
anyone having the ability to produce apparent power problems.
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							Overheating power down
If the processor's temperature reaches an unacceptably high level witheither setting, the computer automatically shuts down to prevent anydamage. In this instance, all unsaved data in memory is lost.
ProblemProcedureComputer shuts
down automatically.Leave the computer off until it reaches room
temperature. If the computer has reached room
temperature and it still does not start, or if it starts
but shuts down quickly, contact TOSHIBA Support.
AC power
If you have trouble turning on the computer with the AC adaptor connected,
check the status of the DC IN/Battery indicator. Refer to the  Power
Condition Descriptions  section for further information.
ProblemProcedureAC adaptor does not
power the computerCheck the connections to make sure that the
power cord/adaptor is firmly connected to the
computer and a working power outlet.
Check the condition of the cord and terminals. If
the cord is frayed or damaged it should be
replaced, while if the terminals are soiled, they should be cleaned with a clean cotton cloth.
If the AC adaptor still does not power the computer, you should contact TOSHIBA Support.
Battery
If you suspect a problem with the battery, check the status of the  DC IN/
Battery  indicator.
ProblemProcedureBattery does not
power the computerThe battery might be discharged. Connect the AC
adaptor to recharge the battery.Battery does not
charge when the AC
adaptor is attached.If the battery is completely discharged, it will not
begin charging immediately. In these instances, wait a few minutes before trying again. If the
battery still does not charge, check that the power
outlet the AC adaptor is connected to is supplying
power. This can be tested by plugging another
appliance into it.
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							ProblemProcedureBattery does not
power the computer
as long as expectedIf you frequently recharge a partially charged
battery, the battery might not charge to its full
potential. In these instances, you should fully
discharge the battery and then attempt to charge it
again.Check the  Power saver  option under  Choose or 
customize a power plan  in the Power Options .
Real-Time Clock
ProblemProcedureThe BIOS setting
and system date/
time are lost.The lasting time of the Real-Time Clock (RTC) has run out. You must set the date and time in the
TOSHIBA Setup Utility by using the following
steps:
1. Launch the TOSHIBA Setup Utility. Refer to the TOSHIBA Setup Utility  section for further
information.
2. Set the date in the  System Date field.
3. Set the time in the  System Time field.
4. Follow the on-screen instructions to proceed.
Keyboard
Keyboard problems can be caused by the setup and configuration of the
computer. Refer to the  The Keyboard section for further information.
ProblemProcedureOutput to screen is
garbledRefer to your software documentation to ensure
that it is not remapping the keyboard in any way
(remapping involves changing or reassigning the
function of each key).
If you are still unable to use the keyboard, you should contact TOSHIBA Support.
Internal display panel
Apparent problems of the computer's display panel might be related tosetup and configuration of the computer.
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							ProblemProcedureNo displayPress the function keys to adjust the display
priority, and to make sure that it is not set for
output to an external monitor.Markings appear on
the computer's
display panel.These marks might have come from contact with
the keyboard and Touch Pad while the display
panel has been closed. Try to remove the marks
by gently wiping the display panel with a clean dry
cloth or, if this fails, with a good quality LCD screen
cleaner. In this latter instance, you should always
follow the instructions with the screen cleaner and always ensure that you let the display panel dry
properly before closing it.
Hard Disk Drive
ProblemProcedureComputer does not
boot from Hard Disk
DriveCheck to see whether there is a disc in the optical
disc drive - if so remove it and try to start the
computer again.
If this has no effect, check the  Boot Priority
Options  setting within the TOSHIBA System
Settings.Slow performanceThe files on the Hard Disk Drive might be
fragmented. In this instance, you should run the
disk Defragmentation utility to check the condition
of your files and the Hard Disk Drive. Refer to the
operating system's documentation or online Help
File for further information on operating and using
the Defragmentation utility.
As a last resort, you should reformat the Hard Disk
Drive and then reload the operating system and all
other files and data. If you are still unable to
resolve the problem, contact TOSHIBA Support.
Optical Disc Drive
For further information, refer to  Operating Basics.
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6-7 
						

							ProblemProcedureYou cannot access a
CD/DVD/Blu-ray
Disc™ in the driveMake sure that the drive’s disc tray is securely closed. Press gently until it clicks into place.
Open the disc tray and make sure that the disc is
properly seated. It should lie flat with the label
facing up.
A foreign object in the disc tray could block laser
light from reading the disc. Make sure that there is
no obstruction. Remove any foreign object.
Check whether the disc is dirty. If it is, wipe it with
a clean cloth dipped in water or a neutral cleaner.
Memory Media Card
For further information, refer to  Operating Basics.
ProblemProcedureMemory media card
error occursRemove the memory media card from the
computer and then reinsert it in order to ensure that it is firmly connected.
If the problem persists, then you should refer to the
documentation supplied with your memory media card for further information.You cannot write to
a memory media
cardRemove the memory media card from the computer and check to ensure that it is not write protected.You cannot read a
fileCheck to ensure the required file is actually on the memory media card that is inserted into the
computer.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
Pointing device
If you are using a USB mouse, you should also refer to both the  USB
mouse  section and the documentation supplied with your mouse.
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6-8 
						

							Touch PadProblemProcedureThe Touch Pad does
not work.Check the Device Select settings.
Click  Control Panel -> Hardware and Sound ->
Mouse  under Windows System  group in the Apps
view.On-screen pointer
does not respond to
pointing device
operationIn this instance, the system might be busy. Try
moving the mouse again after waiting a short
while.Double-tapping
(Touch Pad) does
not workIn this instance, you should initially try changing
the double-click speed setting within the Mouse
Control utility.
1. To access this utility, click  Control Panel ->
Hardware and Sound -> Mouse  under
Windows System  group in the Apps view.
2. Within the Mouse Properties window, click the Buttons  tab.
3. Set the double-click speed as required and click  OK.The on-screen
pointer moves too
fast or too slowIn this instance, you should initially try changing the speed setting within the Mouse Control utility.
1. To access this utility, click  Control Panel ->
Hardware and Sound -> Mouse  under
Windows System  group in the Apps view.
2. Within the Mouse Properties window, click the Pointer Options  tab.
3. Set the pointer speed as required and click OK.The reaction of
Touch Pad is either
too sensitive or not
sensitive enough.Adjust the touch Sensitivity.
To access it, click  Control Panel -> Hardware 
and Sound -> Mouse  under Windows System
group in the Apps view.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
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							USB mouseProblemProcedureOn-screen pointer
does not respond to
mouse operationIn this instance, the system might be busy. Try
moving the mouse again after waiting a short
while.Remove the mouse from the computer and then
reconnect it to a free USB port in order to ensure
that it is firmly attached.Double-clicking does
not workIn this instance, you should initially try changing the double-click speed setting within the Mouse
Control utility.
1. To access this utility, click  Control Panel ->
Hardware and Sound -> Mouse  under
Windows System  group in the Apps view.
2. Within the Mouse Properties window, click the Buttons  tab.
3. Set the double-click speed as required and click  OK.The on-screen
pointer moves too
fast or too slowIn this instance, you should initially try changing the speed setting within the Mouse Control utility.
1. To access this utility, click  Control Panel ->
Hardware and Sound -> Mouse  under
Windows System  group in the Apps view.
2. Within the Mouse Properties window, click the Pointer Options  tab.
3. Set the pointer speed as required and click OK.The on-screen
pointer moves
erraticallyThe elements of the mouse responsible for
detecting movement might be dirty. Refer to the documentation supplied with the mouse for
instructions on how to clean it.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
USB device
In addition to the information in this section, also refer to the documentationsupplied with your USB device.
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							ProblemProcedureUSB device does not
workRemove the USB device from the computer and
then reconnect it to a free port in order to ensure that it is firmly attached.
Ensure that any required USB device drivers are
properly installed. To achieve this, you should refer to both the device documentation and the
operating system documentation.
Sleep and Charge function
For more information and settings, refer to the  USB Sleep and Charge
section.
ProblemProcedureI cannot use the
Sleep and Charge
function.Sleep and Charge function might be disabled.
Enable the  Sleep and Charge  function in the
TOSHIBA System Settings.
When there is a current overflow of the external
device connected to the compatible port, USB bus
power (DC5V) supply might be stopped for safety
reasons. When this happens, disconnect an
external device if some external devices are
connected. After that, turn the power of the
computer ON/OFF to restore the function. If this
function cannot be still used even if only one external device is connected, stop using the
external device because its current is over the
acceptable value of this computer.
Some external devices might not be able to use
the Sleep and Charge function. In this case, please
try one or more of the following methods.
Turn OFF the computer while external devices
are connected.
Connect external devices after turning OFF of
the computer.
If this function cannot be still used, change the
setting to disable the function and stop using this
function.
The battery depletes
quickly even when I
turned OFF the
power of the
computer.If Sleep and Charge function is enabled, the computer's battery discharges during hibernation
or when the computer is turned off.
Connect the AC adaptor to the computer or disable
the Sleep and Charge function.
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