Dell Precision T7400 (Late 2007) User Manual Page 87
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- Table of contents
- TROUBLESHOOTING
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Clearing Forgotten Passwords 87
7
Clearing Forgotten Passwords
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
NOTICE: This process erases both the system and the administrator passwords.
1
Follow the procedures in "Before You Begin" on page 139.
2
Remove the computer cover (see "Removing the Computer Cover" on
page 141).
Jumper Setting Description
PSWD Password features are enabled
(default setting).
Password features are disabled.
RTCRST The real-time clock has not been
reset (default setting).
The real-time clock is being reset.
jumpered unjumpered
- Model DCDO 1
- Notes, Notices, and Cautions 2
- Contents 3
- 4 Contents 4
- 6 Contents 6
- 8 Contents 8
- Contents 11 11
- 12 Contents 12
- Finding Information 13
- 14 Finding Information 14
- 16 Finding Information 16
- 18 Finding Information 18
- 20 Finding Information 20
- About Your Computer 21
- 22 About Your Computer 22
- Back View of the Computer 23
- Back Panel Connectors 24
- Inside View 26
- System Board Components 27
- 28 About Your Computer 28
- Specifications 29
- 30 About Your Computer 30
- 32 About Your Computer 32
- 34 About Your Computer 34
- Advanced Features 35
- Power Management 37
- About RAID Configurations 39
- RAID Level 0 40
- RAID Level 1 41
- RAID Level 5 41
- RAID Level 10 43
- RAID Configuration Utility 44
- Exit Screen 45
- Creating a Second RAID Volume 47
- Activating a RAID Volume 48
- Deleting a RAID Volume 48
- Advanced Features 49 49
- 50 Advanced Features 50
- Setting Up Your Computer 51
- 52 Setting Up Your Computer 52
- Connecting to the Internet 53
- Windows XP 54
- Windows Vista™ 55
- Microsoft 56
- Setting Up Your Computer 57 57
- Power Protection Devices 59
- Surge Protectors 60
- Line Conditioners 60
- Securing Your Computer 61
- Security Cable Lock 63
- Passwords 64
- Option Settings 66
- Assigning a System Password 66
- Typing Your System Password 67
- Trusted Platform Module (TPM) 71
- Security Management Software 72
- Computer Tracking Software 72
- Securing Your Computer 73 73
- 74 Securing Your Computer 74
- System Setup 75
- 76 System Setup 76
- 78 System Setup 78
- 80 System Setup 80
- 82 System Setup 82
- Boot Menu 84
- Booting to a USB Device 85
- Clearing Forgotten Passwords 87
- Clearing CMOS Settings 89
- Flashing the BIOS 89
- Cleaning Your Computer 91
- Troubleshooting 93
- 94 Troubleshooting 94
- E-Mail and Internet Problems 95
- Keyboard Problems 96
- Lockups and Software Problems 96
- A program stops responding 97
- A program crashes repeatedly 97
- A solid blue screen appears 97
- Memory Problems 98
- Mouse Problems 99
- Network Problems 99
- Power Problems 100
- Printer Problems 101
- Scanner Problems 102
- Sound Problems 103
- 104 Troubleshooting 104
- Troubleshooting Tools 105
- 106 Troubleshooting Tools 106
- 108 Troubleshooting Tools 108
- 110 Troubleshooting Tools 110
- 112 Troubleshooting Tools 112
- Power Lights 113
- Beep Codes 115
- Error Messages 116
- 118 Troubleshooting Tools 118
- 120 Troubleshooting Tools 120
- 122 Troubleshooting Tools 122
- Dell Diagnostics 123
- Dell Diagnostics Main Menu 125
- 128 Troubleshooting Tools 128
- Reinstalling Software 129
- Microsoft Windows Vista™ 130
- Problems in the Microsoft 131
- Windows 131
- XP and 131
- Using Microsoft 132
- System Restore 132
- Enabling System Restore 133
- Windows XP: Dell PC Restore 134
- Before you Begin 137
- Adding and Replacing Parts 139
- Product Information Guide 140
- Removing the Computer Cover 141
- Removing the Front Panel 143
- Replacing the Front Panel 144
- Replacing the Computer Cover 145
- I/O Panel 146
- I/O-Panel Components 147
- Removing the I/O Panel 148
- Replacing the I/O Panel 149
- Processor 150
- Installing the Processor 154
- Power Supply 160
- DC Power Connector P1 161
- DC Power Connectors P2 162
- DC Power Connector P5 163
- DC Power Connector P7 163
- DC Power Connectors P10, P11 164
- DC Power Connector P18 165
- DC Power Connector P19 165
- DC Power Connector P22, P23 166
- DC Power Connector P24 166
- Removing the Power Supply 167
- 1 power supply screws (4) 168
- Replacing the Power Supply 169
- About the Battery 169
- Removing the Battery 170
- Replacing the Battery 171
- Memory Installation 173
- Operating Systems Only) 174
- Expansion Card Support 194
- Installing an Expansion Card 195
- 1 card retention device 2 tab 196
- Removing an Expansion Card 202
- 1 release tab 2 card retainer 214
- Your computer supports: 225
- Power Cable Connectors 227
- SATA Data Cable Connectors 228
- SAS Data Cable Connectors 229
- Hard Drive 230
- Drive Panels 246
- Removing a Drive-Panel Insert 247
- Replacing the Drive Panel 249
- Floppy Drive 251
- Installing a Floppy Drive 254
- Media Card Reader 258
- Optical Drive 265
- System Board 271
- Replacing the System Board 277
- Getting Help 281
- Online Services 282
- Problems With Your Order 283
- Product Information 283
- Before You Call 284
- 286 Getting Help 286
- Contacting Dell 287
- 288 Getting Help 288
- Appendix 289
- Glossary 291
- 292 Glossary 292
- 294 Glossary 294
- 296 Glossary 296
- 298 Glossary 298
- 300 Glossary 300
- 302 Glossary 302
- 304 Glossary 304
- 306 Glossary 306
- Glossary 307 307
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