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D–12 376220-001 Service Reference Guide, dc5100
Blank screen and the
power LED flashes Red five
times, once every second,
followed by a two second
pause, and the computer
beeps five times. Beeps
continue for five iterations
after which the LED flashes
will continue until the
problem is resolved.
Pre-video memory error. 1. Reseat DIMMs. Power on the
system.
2. Replace DIMMs one at a time to
isolate the faulty module.
3. Replace third-party memory
with HP memory.
4. Replace the system board.
Power LED flashes Red six
times, once every second,
followed by a two second
pause, and the computer
beeps six times. Beeps
continue for five iterations
after which the LED flashes
will continue until the
problem is resolved.
Pre-video graphics
error.
For systems with a graphics card:
1. Reseat the graphics card.
2. Replace the graphics card.
3. Replace the system board.
For systems with integrated
graphics, replace the system board.
Blank screen and the
power LED flashes Red
eight times, once every
second, followed by a two
second pause, and the
computer beeps eight
times. Beeps continue for
five iterations after which
the LED flashes will
continue until the problem
is resolved.
Invalid ROM based on
checksum.
1. Reflash the ROM using a
ROMPaq diskette.
2. Replace the system board.
Monitor does not function
properly when used with
energy saver features.
Monitor without energy
saver capabilities is
being used with energy
saver features enabled.
Disable monitor energy saver
feature.
Dim characters. The brightness and
contrast controls are not
set properly.
Adjust the monitor brightness and
contrast controls.
Cables are not properly
connected.
Check that the graphics cable is
securely connected to the graphics
card and the monitor.
Blurry video or requested
resolution cannot be set.
If the graphics controller
was upgraded, the
correct video drivers
may not be loaded.
Install the video drivers included in
the upgrade kit.
Problem Cause Solution
- Service Reference Guide 1
- First Edition (January 2005) 2
- Contents 3
- 1.4 Converting to NTFS 8
- 1.5 HP Software 8
- ■ Support Software CD 9
- ■ HP Web site at www.hp.com 9
- 2.1 Power-On Self-Test (POST) 11
- 2.2 Computer Setup Utilities 12
- 2.2.2 Computer Setup Menu 14
- 2.3 Diagnostics for Windows 24
- 2.4 Configuration Record 28
- Desktop Management 31
- 3.3.3 System Software Manager 33
- 3.3.5 Subscriber’s Choice 34
- 3.3.6 ROM Flash 34
- 3.3.7 Remote ROM Flash 34
- 3.3.8 HPQFlash 35
- 3.3.9 FailSafe Boot Block ROM 35
- 3.3.10 Replicating the Setup 36
- Copying to Multiple Computers 37
- Creating a Bootable Device 38
- 3.3.12 World Wide Web Site 42
- 3.4.1 Password Security 47
- Entering a Power-On Password 48
- Entering a Setup Password 48
- 3.4.4 DriveLock 50
- Using DriveLock 51
- DriveLock Applications 51
- 3.4.5 Smart Cover Sensor 52
- Locking the Smart Cover Lock 53
- 3.4.8 Cable Lock Provision 55
- 3.5.1 Drive Protection System 56
- 3.5.3 Thermal Sensor 56
- Features 57
- 4.2 ATA Cables 58
- 4.2.3 PATA Data Cable 59
- 4.2.4 PATA Power Cable 59
- 4.2.5 PATA Cable Layout 60
- 4.3.1 PATA Device Classes 61
- 4.4 ATA SMART Drives 66
- 4.5 Drive Capacities 66
- 4.6 SATA BIOS 67
- Disassembly Preparation 69
- 5.2.1 Generating Static 71
- 5.2.4 Grounding the Work Area 72
- 5.3 Operating Guidelines 73
- 5.4 Routine Care 73
- 5.4.3 Cleaning the Keyboard 74
- 5.5 Service Considerations 75
- 5.5.3 Screws 76
- 5.5.4 Cables and Connectors 76
- 5.5.5 Hard Drives 76
- Microtower (MT) Chassis 79
- 6.2 External Security Devices 80
- 6.3 Access Panel 81
- 6.4 Front Bezel 82
- To reinstall the front bezel 83
- 6.5 Front Drive Bezels 84
- 6.5.2 Diskette Drive Bezel 85
- 6.6 Memory Modules 86
- 6.7 Expansion Cards 87
- 6.7.2 PCI Expansion Card 88
- 6.8 Cable Management 90
- 6.8.1 Cable Connections 91
- 6.9 Drives 92
- 6.9.2 Removing a Drive 93
- Releasing the Drives 94
- 6.9.3 Installing a Drive 95
- Connecting Hard Drive Cables 97
- 6.10 Chassis Fan 98
- 6.12 Front I/O Devices 100
- 6.13 Power Switch Assembly 101
- 6.14 Heatsink 102
- 6.15 Processor 103
- 6.16 System Board 105
- 6.17 Battery 106
- 6.17.1 Type 1 Battery Holder 107
- 6.17.2 Type 2 Battery Holder 108
- 6.17.3 Type 3 Battery Holder 109
- 6.18 Speaker 110
- 6.19 Power Supply 111
- 7.3 External Security Devices 116
- 7.3.3 Pa dl oc k 117
- With Security Cable 119
- 7.4 Computer Cover 122
- 7.5 Fron t Dr ive B eze ls 123
- Item Description 124
- 1 Diskette drive bezel 124
- 2 Hard drive bezel 124
- 3 3.5” drive bezel 124
- 7.6 Cable Management 125
- 7.6.1 Cable Connections 127
- 7.7 M emor y 128
- 7.8 Expansion Card 130
- 7.8.2 PCI Expansion Card 131
- 7.9 Drives 133
- 7.9.2 Opti c al Drive 134
- 7.10 Fan S hroud 141
- 7.11 Front I/O Devices 142
- 7.12 Power Switch Assembly 146
- 7.13 H e a tsin k 147
- 7.14 P roce ssor 148
- 7.15 S p eaker 150
- 7.16 Power Supply 151
- 7.17 System Board 153
- 2. Install the processor 157
- 7.18 Chassis Fan 158
- 7.19 B a t ter y 159
- 7.19.2 Type 2 Battery Holder 161
- Connector Pin Assignments 163
- Ethernet RJ-45 164
- Ethernet AUI 164
- Parallel Interface 165
- Microphone 165
- Headphone 166
- Line-In Audio 166
- Line-Out Audio 166
- Ultra SCSI 167
- External Infrared Transceiver 167
- MultiBay CD-ROM Adapter 168
- 24-Pin Power 169
- 24-Pin MicroFit Power 169
- 4-Pin Power (for CPU) 169
- 6-Pin Power 170
- PCI Express 171
- Power Cord Set Requirements 173
- Country-Specific Requirements 174
- POST Error Messages 175
- Preliminary Checklist 185
- Solving Minor Problems 186
- Solving Power Supply Problems 189
- Solving Diskette Problems 190
- Solving Hard Drive Problems 192
- Solving MultiBay Problems 194
- Solving Display Problems 195
- Solving Audio Problems 199
- Solving Printer Problems 201
- Solving Network Problems 206
- Solving Memory Problems 208
- Solving Processor Problems 209
- Solving Drive Key Problems 211
- Designators 219
- Intel-Based Systems 223
- DIMM Sockets 224
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