Toshiba C50b User Manual

							Real Time ClockProblemProcedureThe BIOS setting
and system date/
time are lost.The lasting time of the Real Time Clock (RTC) has
run out - you will need to set the date and time in
the BIOS setup utility by using the following steps:
1. Click  Start. Point to the arrow ( 
 ) beside the
Shut down  button and then select  Restart.
2. Hold down the  F2 key and then release this
key one second after the computer is power
on - the BIOS setup utility will load.
3. Set the date in the  System Date field.
4. Set the time in the  System Time field.
5. Press  F10 - a confirmation message will be
displayed.
6. Select  Yes - the BIOS setup utility will end
and the computer will restart.
Keyboard
Keyboard problems can be caused by the setup and configuration of the
computer - please refer to the  The Keyboard section for further information.
ProblemProcedureOutput to screen is
garbledPlease refer to your software's 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 computer's display panel problems may be related to the
computer's setup and configuration.
ProblemProcedureNo displayPress the function keys to adjust the display
priority, and to make sure it is not set for output to
an external monitor.
User's Manual 6-6 
						

							ProblemProcedureMarkings appear on
the computer's
display panel.These marks may have come from contact with the
keyboard and Touch Pad while the display panel
has been closed. You should 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 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 Setting within
the TOSHIBA HWSetup.Slow performanceThe files on the Hard Disk Drive may be
fragmented - in this instance you should run the
disk Defragmentation utility to check the condition
of your files and the Hard Disk Drive. Please 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, please refer to  Operating Basics.
User's Manual
6-7 
						

							ProblemProcedureYou cannot access a
CD/DVD Disc™ in
the driveMake sure the drive’s disc tray is securely closed. Press gently until it clicks into place.
Open the disc tray and make sure 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 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, please refer to  Operating Basics.
ProblemProcedureMemory media card
error occursRemove the memory media card from the
computer and then reinsert it in order to ensure 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.
Touch Pad
ProblemProcedureThe Touch Pad does
not work.Check the Device Select settings.
Click  Start -> Control Panel -> Hardware and 
Sound -> Mouse .
User's Manual 6-8 
						

							ProblemProcedureOn-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  Start -> Control 
Panel -> Hardware and Sound -> Mouse .
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  Start -> Control 
Panel -> Hardware and Sound -> Mouse .
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  Start -> Control Panel ->
Hardware and Sound -> Mouse .
If you are still unable to resolve the problem,
contact TOSHIBA Support.
USB mouse
ProblemProcedureOn-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 it
is firmly attached.
User's Manual 6-9 
						

							ProblemProcedureDouble-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  Start -> Control 
Panel -> Hardware and Sound -> Mouse .
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  Start -> Control 
Panel -> Hardware and Sound -> Mouse .
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 - please 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, please also refer to thedocumentation supplied with your USB device.
ProblemProcedureUSB device does not
workRemove the USB device from the computer and
then reconnect it to a free port in order to ensure 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.
Sound system
In addition to the information in this section, please also refer to thedocumentation supplied with your audio device.
User's Manual 6-10 
						

							ProblemProcedureNo sound is heardPress the function keys to increase or decreasevolume.
Check the software volume settings.
Please check to see if Mute is turned to Off Check to make sure the headphone connection is
secure.
Check within the Windows Device Manager
application to ensure the sound device is enabled
and that the device is properly working.Annoying sound is
heardIn this instance you may be experiencing feedback
from either the internal microphone or an external
microphone connected to the computer - please
refer to  Sound System and Video mode  for further
information.
Volume cannot be adjusted during Windows start up or shut down.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
External monitor
Please also refer to  Operating Basics, and to the documentation supplied
with your monitor for further information.
ProblemProcedureMonitor does not
turn onAfter confirming that the monitor's power switch is
on, you should check the connections to make
sure that the power cord/adaptor is firmly
connected to the monitor and to a working power outlet.
User's Manual 6-11 
						

							ProblemProcedureNo displayTry adjusting the contrast and brightness controlson the external monitor.
Press the function key in order to change the
display priority and ensure that it is not set for the
internal display only.
Check to see if the external monitor is connected.
When the external monitor is set as the primary
display device in extended desktop mode, it will not
display when the computer wakes up from Sleep
Mode if the external monitor has been
disconnected while in Sleep Mode.
To keep this from happening, do not disconnect
the external monitor while the computer is in Sleep
or Hibernation Mode.
Remember to turn off the computer before
disconnecting the external monitor.
When the display panel and an external monitor
are set to clone mode and they are turned off by
the timer, the display panel or the external monitor
may not display when turned on again.
If this occurs, press the function key to re-set the
display panel and external monitor to clone mode.Display error occursCheck that the cable connecting the external
monitor to the computer is firmly attached.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
LAN
ProblemProcedureCannot access LANCheck for a firm cable connection between the LAN jack and the LAN hub.Wake-up on LAN
does not workMake sure the AC adaptor is connected. The
Wake-up on LAN function consumes power even
when the system is off.
If problems persist, consult your LAN administrator.
User's Manual 6-12 
						

							Wireless LANProblemProcedureCannot access
Wireless LANMake sure the computer's Wireless communication
function is on.
If problems persist, contact your LAN
administrator.
Bluetooth
ProblemProcedureCannot access
Bluetooth deviceCheck to ensure the computer's Wireless
Communication function is on.
Check to ensure the Bluetooth Manager
application is running on the computer and that
power to the external Bluetooth device is turned on.
Check to ensure that no optional Bluetooth Adaptor
is installed in the computer - the built-in Bluetooth
hardware cannot operate simultaneously with
another Bluetooth controller.
If you are still unable to resolve the problem,
contact TOSHIBA Support.
TOSHIBA support
If you require any additional help using your computer or if you are havingproblems operating the computer, you may need to contact TOSHIBA foradditional technical assistance.
Before you call Some problems you experience may be related to software or the
operating system so it is important that you investigate other sources of
assistance first. Before contacting TOSHIBA, try the following:
Review troubleshooting sections in the documentation supplied with your software and/or peripheral devices.
If a problem occurs when you are running software applications,
consult the software documentation for troubleshooting suggestions
and consider calling the software company's technical support department for assistance.
Consult the reseller or dealer from where you purchased yourcomputer and/or software - they are your best resource for current
information and support.
User's Manual 6-13 
						

							TOSHIBA technical supportIf you are still unable to solve the problem and suspect that it is hardware
related, visit TOSHIBA technical support website
http://www.toshiba.co.jp/worldwide/User's Manual 6-14 
						

							Chapter 7
Appendix
Specifications This section summarizes the computer’s technical specifications.
Physical Dimensions Physical Dimensions shown below do not include parts that extend beyondthe main body. The physical dimensions may vary depending on the model
you purchased.
SizeApproximately 380 (w) x 259.9 (d) x 26.6/26.6 (h)
millimeters
(not including parts that extend beyond the main body).
Environmental Requirements
ConditionsAmbient temperatureRelative humidityOperating5°C (41°F) to 35°C
(95°F)20% to 80%
(noncondensing)Non-operating-20°C (-4°F) to 60°C
(140°F)10% to 90%
(noncondensing)Wet-bulb temperature29°C maximumConditionsAltitude (from sea
level)Operating-60 to 3,000 metersNon-operating-60 to 10,000 meters
maximum
Power Requirements
AC adaptor100-240V AC
50 or 60 Hz (cycles per second)Computer19V DC
User's Manual 7-1