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Toshiba NB255-N250 User Manual - Page 149

Sound system problems, Your hard disk seems very slow.

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If Something Goes Wrong Sound system problems 149 4 Click the Tools tab. 5 Click the Check now... button. The Check Disk box appears. 6 You can choose one or both options: ❖ Automatically fix file system errors ❖ Scan for and attempt recovery of bad sectors 7 Click Start. Error-checking tests and repairs the storage drive. Your hard disk seems very slow. If you have been using your computer for a long time, your files may have become fragmented. Run Disk Defragmenter. To do this, click Start, All Programs, Accessories, System Tools, and then Disk Defragmenter. After it opens, click Defragment disk. Your data files are damaged or corrupted. Refer to your software documentation for file recovery procedures. Many software packages automatically create backup files. You may also be able to recover lost data using utility software. Consult your network administrator. Some programs run correctly but others do not. This is probably a configuration problem. If a program does not run properly, refer to its documentation and check that the hardware configuration meets its needs. Sound system problems No sound is coming from the computer's speakers. Adjust the volume control. Try pressing Fn + Esc to see if volume mute is disabled. Check that the volume control on the computer is turned up. If you are using external headphones or speakers, check that they are securely connected to your computer. The computer emits a loud, high-pitched noise. This is feedback between the microphone and the speakers. It occurs in any sound system when input from a microphone is fed to the speakers and the speaker volume is too loud. Adjust the volume control.

Section	Page
NB250 Series User’s Guide	1
Contents	18
Introduction	24
This guide	26
Safety icons	27
Other icons used	27
Your computer’s features and specifications	28
Other documentation	28
Service options	28
Chapter 1: Getting Started	29
Getting comfortable with your computer	29
Keeping yourself comfortable	30
Precautions	30
Important information on your computer’s cooling fan	32
Setting up your computer	32
Connecting to a power source	33
Charging the main battery	35
Using the computer for the first time	36
Opening the display panel	36
Turning on the power	37
Setting up your software	38
Registering your computer with Toshiba	38
Adding optional external devices	38
Adding memory (optional)	39
Installing a memory module	39
Removing a memory module	45
Checking total memory	47
Recovering the Internal Storage Drive	47
Recovering to out-of-box state (recommended recovery method)	49
Recovering to a custom size partition	51
Recovering without changing the internal storage drive partitions	54
Creating recovery DVDs/media	56
Restoring from recovery DVDs/media	59
Erasing the Internal Storage Drive	61
Checking the internal storage drive operating status	62
Installing drivers and applications	63
Using the TouchPad™	63
Adjusting TouchPad™ settings	66
Disabling or enabling the TouchPad™	67
Using external display devices	67
Connecting an external monitor or projector	67
Directing the display output when you turn on the computer	68
Adjusting the quality of the external display	69
Using an external keyboard	69
Using a mouse	69
Connecting a printer	69
Setting up a printer	70
Turning off the computer	71
Options for turning off the computer	71
Using the Shut down command	73
Using and configuring Hibernation mode	76
Using and configuring Sleep mode	78
Closing the display panel	81
Customizing your computer’s settings	81
Caring for your computer	81
Cleaning the computer	81
Moving the computer	82
Using a computer lock	82
Chapter 2: Learning the Basics	83
Computing tips	83
Using the keyboard	84
Character keys	85
Making your keyboard emulate a full-size keyboard	85
Ctrl, Fn, and Alt keys	85
Function keys	85
Special Windows® keys	86
Overlay keys	86
Starting a program	87
Starting a program from the Start menu	88
Starting a program from Windows® Explorer	88
Starting a program using the Search programs and files field	89
Saving your work	90
Printing your work	91
Backing up your work	92
Restoring your work	93
Toshiba’s online resources	93
Chapter 3: Mobile Computing	94
Toshiba’s energy-saver design	94
Running the computer on battery power	94
Battery Notice	95
Power management	96
Using additional batteries	96
Charging batteries	96
Charging the main battery	97
Charging the RTC battery	97
Monitoring main battery power	98
Determining remaining battery power	100
What to do when the main battery runs low	100
Setting battery notifications	101
Conserving battery power	101
Power Plans	102
Using a hot key to set the Power Plan	103
Changing the main battery	104
Removing the battery from the computer	104
Inserting a charged battery	106
Taking care of your battery	107
Safety precautions	107
Maintaining your battery	108
Disposing of used batteries	109
Traveling tips	110
Chapter 4: Exploring Your Computer’s Features	111
Exploring the desktop	111
Finding your way around the desktop	112
Setting up for communications	114
Connecting your computer to a network	115
Exploring audio features	115
Recording sounds	115
Using external speakers or headphones	116
Using the Web Camera	117
Using the Memory card reader	117
Inserting memory media	118
Removing memory media	118
Chapter 5: Utilities	120
TOSHIBA Assist	121
Secure	122
Protect & Fix	123
Optimize	124
TOSHIBA Recovery Media Creator	125
TOSHIBA Application Installer	125
Setting passwords	126
Using an instant password	126
Using a supervisor password	127
Using a user password	128
Deleting a user password	129
TOSHIBA PC Diagnostic Tool Utility	130
Mouse Utility	131
TOSHIBA Hardware Setup	132
TOSHIBA Zooming Utility	134
TOSHIBA Accessibility	135
TOSHIBA Service Station	136
Chapter 6: If Something Goes Wrong	137
Problems that are easy to fix	137
Problems when you turn on the computer	138
The Windows® operating system is not working	140
Using Startup options to fix problems	141
Internet problems	142
The Windows® operating system can help you	142
Fixing a problem with Device Manager	143
Checking device properties	143
Memory problems	144
Power and the batteries	144
Keyboard problems	146
Display problems	146
Disk or storage drive problems	148
Error-checking	148
Sound system problems	149
Printer problems	150
Wireless networking problems	151
Develop good computing habits	152
Data and system configuration backup in the Windows® operating system	153
If you need further assistance	157
Before you contact Toshiba	157
Contacting Toshiba	157
Other Toshiba Internet Web sites	158
Toshiba’s worldwide offices	159
Appendix A: Hot Keys/TOSHIBA Cards	161
Hot Key Cards	161
Using the Hot Key Cards	162
Application Cards	163
Using the Application Cards	163
Card Case	164
Hot key functions	165
Volume Mute	165
Lock (Instant security)	166
Power plan	167
Sleep mode	168
Hibernation mode	169
Output (Display switch)	170
Display brightness	171
Disabling or enabling wireless devices	172
Disabling or enabling the TouchPad™	173
Zoom (Display resolution)	174
Keyboard hot key functions	175
Appendix B: Power Cord/Cable Connectors	176
Glossary	177