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Toshiba U105 User Guide - Page 108

Charging the RTC battery, may display the incorrect time and date, or stop working

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108 Mobile Computing Charging the batteries Charging the RTC battery Your computer has an internal real-time clock (RTC) battery. The RTC battery powers the System Time Clock and the BIOS memory used to store your computer's configuration settings. When fully charged, the RTC battery maintains this information for up to a month when the computer is powered off. The RTC battery may have become completely discharged while your computer was shipped, resulting in the following error message during startup: BAD RTC BATTERY BAD CHECKSUM (CMOS) CHECK SYSTEM NOTE The above error message may vary by computer model. The RTC battery does not charge while the computer is turned off even when the AC adapter is charging the computer. If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date, or stop working altogether. NOTE It is seldom necessary to charge the RTC battery because it charges while the computer is on. If the RTC battery is low, the real-time clock and calendar may display the incorrect time and date or stop working. When Hibernation mode is enabled and the RTC battery is completely discharged, a warning prompts you to reset the real-time clock. The computer can be used while the RTC battery is being charged, although the charging status of the RTC battery cannot be monitored.

Section	Page
libretto® U100/U105 Series User’s Guide	1
Contents	21
Introduction	29
This guide	30
Safety icons	31
Other icons used	32
Other documentation	32
Service options	33
Chapter 1: Getting Started	34
Selecting a place to work	34
Creating a computer-friendly environment	34
Keeping yourself comfortable	35
Precautions	35
Important information on your computer’s cooling fan	38
Setting up your computer	38
Setting up your software	39
Registering your computer with Toshiba	40
Adding external devices	41
Connecting to a power source	42
Charging the main battery	45
Using the computer for the first time	46
Opening the display panel	46
Your computer’s features and specifications	47
Turning on the power	47
Adding memory	48
Installing a memory module	49
Removing a memory module	52
Hard Drive Recovery Utilities (for the U100 model only)	54
Creating Recovery CDs/DVDs	55
Hard Disk Drive Recovery using the recovery partition	56
Hard Disk Drive Recovery using the Recovery media	59
Deleting the Hard Disk Recovery Utility	62
Installing drivers and applications	63
Using the Accupoint II pointing device	64
Turning off the computer	65
Closing the display panel	65
Devices for office computing	66
libretto® DVD Dock	67
Connecting the libretto® DVD Dock	67
Removing the libretto® DVD Dock	68
Using external display devices	69
Directing the display output when you turn on the computer	70
Adjusting the quality of the external display	71
Using an external keyboard	71
Using a mouse	72
Connecting a local printer	72
Setting up your printer	73
Caring for your computer	76
Cleaning the computer	76
Moving the computer	77
Chapter 2: Learning the Basics	78
Computing tips	78
Using the keyboard	80
Character keys	80
Making your keyboard emulate a full-size keyboard	80
Ctrl, Fn, and Alt keys	81
Function keys	81
Windows special keys	82
Overlay keys	82
Using the overlay to type numeric data	83
Starting a program	84
Starting a program from the Start menu	84
Starting a program from Windows® Explorer	85
Starting a program from the Run dialog box	86
Saving your work	87
Printing your work	89
Backing up your work	90
Restoring your work	91
Using the libretto® DVD Dock	91
libretto® DVD Dock control buttons	92
Inserting discs (CD or DVD)	93
Playing audio	94
Caring for CD or DVD Discs	96
Powering down the computer	96
Using Turn Off Computer or Shut Down	97
Using Hibernation	99
Using Standby	100
Toshiba’s online resources	103
Chapter 3: Mobile Computing	104
Toshiba’s energy-saver design	104
Running the computer on battery power	105
Battery Notice	105
Charging the batteries	106
Charging the main battery	107
Charging the RTC battery	108
Monitoring battery power	109
What to do when the battery alarm sounds	111
Changing batteries	111
Taking care of your battery	114
Safety precautions	114
Maximizing battery life	115
Disposing of used batteries	116
Conserving power	117
Power profiles	118
Using a hot key to set the power profile	118
Additional options for power	119
Chapter 4: Exploring Your Computer’s Features	120
Exploring the desktop	120
Finding your way around the desktop	121
Setting up for communications	123
Connecting the modem to a telephone line	125
Connecting your computer to a network	126
An overview of using the Internet	129
The Internet	129
The World Wide Web	129
Internet Service Providers	130
Connecting to the Internet	130
Surfing the Internet	131
Internet features	131
Uploading to, and downloading files from, the Internet	132
Exploring audio features	133
Recording sounds	133
Using external speakers or headphones	134
Inserting and removing PC Cards	135
Inserting a PC Card	135
Removing a PC Card	136
Setting up a PC Card for your computer	137
Using a Secure Digital (SD) card	137
Inserting an SD card	137
Removing an SD card	138
Chapter 5: Toshiba Utilities	140
Fn-esse®	141
Starting Fn-esse®	141
Using the keyboard or pointing device to assign keys	143
Viewing existing key assignments	144
Changing or removing existing key assignments	145
TOSHIBA Assist	145
Connect	146
Secure	146
Protect & Fix	147
Optimize	147
PC Diagnostic Tool	148
Quick Launch Utility	149
Power Management	150
Mouse Utility	152
Hotkey Utility	152
TOSHIBA Hardware Setup	153
Setting user passwords	155
Using an instant password	155
Setting a user password	156
Disabling a user password	156
Using a supervisor password	157
Setting a supervisor password	157
Deleting a supervisor password	158
HDD Protection	158
TOSHIBA Zooming Utility	160
CD/DVD Drive Acoustic Silencer	161
TOSHIBA Accessibility	162
TOSHIBA SD Memory Boot Utility	163
Booting from a bootable SD card	164
Fingerprint recognition utility	165
Enrolling in OmniPass	166
Replacing your passwords	172
Remembering passwords	173
Authentication settings	175
Password management	176
OmniPass user identities	177
Identities and password management	180
Care and maintenance of your fingerprint sensor	181
Fingerprint sensor limitations	183
Chapter 6: If Something Goes Wrong	184
Problems that are easy to fix	184
Problems when you turn on the computer	186
The Windows ® operating system is not working	188
Using Startup options to fix problems	189
Internet problems	190
The Windows® XP operating system can help you	190
Resolving a hardware conflict	191
A plan of action	191
Resolving hardware conflicts on your own	192
Fixing a problem with Device Manager	193
Memory problems	195
Power and the batteries	196
Keyboard problems	198
Display problems	199
Disk drive problems	201
DVD-ROM or multi-function drive problems	204
Sound system problems	205
PC Card problems	205
Printer problems	209
Modem problems	210
Wireless device problems	211
DVD operating problems	214
Develop good computing habits	217
Data and system configuration backup in Windows XP	218
If you need further assistance	224
Before you contact Toshiba	224
Contacting Toshiba	225
Other Toshiba Internet Web sites	226
Toshiba’s worldwide offices	226
Appendix A: Hot Keys	228
Volume Mute	228
Instant password security	229
Power usage profile	229
Standby mode	230
Hibernation mode	230
Display modes	231
Display brightness	232
Keyboard hot keys	232
Appendix B: Power Cord/Cable Connectors	233
Appendix C: Using ConfigFree™ with your Toshiba Computer	234
Getting Started	235
Starting ConfigFree	235
ConfigFree Utilities	237
Connectivity Doctor	237
Search for Wireless Devices	240
Profile Settings	245
ConfigFree SUMMIT	248
Quick Connect	253
Using the Automatic Switch	256
Semi-Automatic Switch Feature	257
Glossary	258