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C–2 361685-001 Service Reference Guide, dx5150
POST Error Messages
POST Numeric Codes and Text Messages
This section covers those POST errors that have numeric codes associated with them. The section
also includes some text messages that may be encountered during POST.
✎
The computer will beep once after a POST text message is displayed on the screen.
Numeric Codes and Text Messages
Code/Message Probable Cause Recommended Action
BIOS ROM checksum
error–System halted
The checksum of the BIOS
code in the BIOS chip is
incorrect, indicating that the
BIOS code may have become
corrupt.
Verify the correct ROM.
Flash the ROM is needed.
If an expansion card was recently added,
remove it and see if the problem remains.
Clear CMOS.
If the message disappears, there may be a
problem with the expansion card.
Replace the system board.
CMOS battery failed The CMOS battery is no
longer functional.
Replace the RTC battery.
CMOS checksum
error—Defaults
loaded
Checksum of CMOS is
incorrect, so the system loads
the default equipment
configuration. A checksum
error may indicate that CMOS
has become corrupt. A weak
battery may have caused this
error.
Check the battery and replace, if necessary.
CPU at nnnn Displays the running speed of
the CPU.
None.
Press ESC to skip
memory test
The user may press ESC to skip the full memory
test.
HARD DISK INSTALL
FAILURE
Cannot find or initialize the
hard drive controller or the
drive.
Make sure the controller is installed correctly in
the BIOS. If no hard drives are installed, be
sure the Hard Drive selection in Setup is set to
NONE.
Keyboard error or no
keyboard present
Cannot initialize the
keyboard.
Make sure the keyboard is attached correctly
and no keys are pressed during POST. To
purposely configure the system without a
keyboard, set the error halt condition in Setup
to HALT ON ALL, BUT KEYBOARD. The BIOS
then ignores the missing keyboard during
POST.
Memory Test: This message displays during
a full memory test, counting
down the memory areas being
tested.
None.
- 1st edition 1
- Service Reference Guide 3
- First Edition (April 2005) 4
- Contents 5
- 1.4 Converting to NTFS 10
- 1.5 HP Software 11
- Setup screen 15
- 2.2.2 Computer Setup Menu 16
- Computer Setup (Continued) 17
- 2.3.1 Backing up the CMOS 20
- 2.4 Diagnostics for Windows 21
- 2.5 Configuration Record 25
- 2.7 Protecting the Software 26
- 2.8 Restoring the Software 26
- Desktop Management 27
- 3.3.3 System Software Manager 29
- 3.4 ROM Flash 30
- 3.4.2 HPQ Flash 31
- 3.4.3 FailSafe Boot Block ROM 31
- 3.4.4 Replicating Your Setup 31
- 3.4.5 Dual-State Power Button 34
- 3.4.6 World Wide Web Site 35
- Security Features Overview 36
- 3.5.1 Password Security 37
- Entering a User Password 38
- Clearing Passwords 39
- 3.5.6 Cable Lock Provision 41
- 3.6.2 Thermal Sensor 41
- Guidelines and Features 43
- 4.1.2 SATA Power Cable 44
- 4.2.1 PATA Data Cable 45
- 4.2.2 PATA Power Cable 45
- 4.2.3 PATA Cable Layout 46
- 4.4 ATA SMART Drives 47
- 4.5 Drive Capacities 47
- 4.6 SATA BIOS 48
- 4.6.2 Native Mode 49
- Disassembly Preparation 51
- 5.2.1 Generating Static 53
- 5.2.4 Grounding the Work Area 54
- 5.3 Operating Guidelines 55
- 5.4 Routine Care 55
- 5.4.3 Cleaning the Keyboard 56
- 5.4.4 Cleaning the Monitor 56
- 5.5 Service Considerations 57
- 5.5.4 Cables and Connectors 58
- 5.5.5 Hard Drives 58
- Microtower (MT) Chassis 61
- 6.2.2 Installing a Padlock 62
- 6.3 Access Panel 63
- 6.4 Front Bezel 64
- 6.5 Front Drive Bezels 65
- 6.5.2 Diskette Drive Bezel 66
- 6.6 Cable Management 67
- 6.6.1 Cable Connections 68
- 6.7 Memory Modules 69
- 6.8 Expansion Cards 70
- 6.8.2 PCI Expansion Card 71
- 6.9 Drives 73
- 6.9.2 Removing a Drive 74
- Releasing the Drives 76
- 6.9.3 Installing a Drive 77
- Connecting Hard Drive Cables 79
- 6.10 Chassis Fan 80
- ❏ power switch/LED cable 81
- ❏ front USB cable 81
- ❏ front audio cable 81
- 6.12 Front I/O Devices 82
- 6.13 Power Switch Assembly 83
- 6.14 Heatsink 85
- 6.15 Processor 86
- 6.16 System Board 87
- 6.17 Battery 89
- 6.17.1 Type 1 Battery Holder 90
- 6.17.2 Type 2 Battery Holder 91
- 6.17.3 Type 3 Battery Holder 92
- 6.18 Speaker 93
- 6.19 Power Supply 94
- 7.2.1 C a bl e Loc k 96
- 7.2.2 Padl oc k 97
- 7.4 Front Bezel 99
- 7.5 Front Drive Bezels 100
- 7.6 Memory Modules 101
- 7.7 PCI Expansion Card 102
- 7.8 Drives 104
- 7.8.2 Cable Management 105
- 7.8.3 Cable Connections 107
- 7.8.4 Optical Drive 108
- ❏ Audio cable 1 110
- ❏ Flat ribbon data cable 2 110
- ❏ Power cable 3 110
- 7.8.6 Primary Hard Drive 113
- 7.9 Front I/O Devices 115
- 7.10 Power Switch Assembly 116
- 7.11 S pe aker 117
- 7.12 C h assi s Fan 118
- 7.13 B a t ter y 119
- 7.13.1 Type 1 Battery Holder 120
- 7.13.2 Type 2 Battery Holder 121
- 7.14 Heatsink Assembly 122
- 7.15 Proc essor 123
- 7.16 Sys tem B oard 124
- 7.17 Power Su p p ly 126
- Connector Pin Assignments 127
- Ethernet RJ-45 128
- Ethernet AUI 128
- Parallel Interface 128
- Microphone 129
- Headphone 129
- Line-In Audio 129
- Line-Out Audio 130
- Ultra SCSI 130
- External Infrared Transceiver 131
- 24-Pin Power 132
- 24-Pin MicroFit Power 133
- 4-Pin Power (for CPU) 133
- PCI Express 134
- Power Cord Set Requirements 137
- Country-Specific Requirements 138
- POST Error Messages 139
- Preliminary Checklist 147
- Solving Minor Problems 148
- Solving Power Supply Problems 151
- Solving Diskette Problems 152
- Solving Hard Drive Problems 154
- Solving Display Problems 157
- Solving Audio Problems 160
- Solving Printer Problems 162
- Solving Keyboard Problems 163
- Solving Network Problems 166
- Solving Memory Problems 168
- Solving Processor Problems 169
- Solving Drive Key Problems 171
- Solving Software Problems 173
- AMD-Based Systems 175
- DIMM Sockets 176
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