HP Compaq dx2450 Specifications download pdf (Page 95)

Computer will not start.

Cause Solution

Wrong memory modules were used in the upgrade or memory

modules were installed in the wrong location.

1. Review the documentation that came with the system to

determine if you are using the correct memory modules

and to verify the proper installation.

2. Listen for beeps from the computer. See

Interpreting

POST Audible Codes on page 90 to determine possible

causes.

3. If you still cannot resolve the issue, contact Customer

Support.

Solving Hardware Installation Problems 89

1 2 ... 90 91 92 93 94 95 96 97 98 99 100 ... 106 107

Service Reference Guide 1
Table of contents 3
Appendix E Specifications 6
Computer Setup—Main 10
Computer Setup—Advanced 11
Computer Setup—Power 12
Computer Setup—Boot 13
Computer Setup—Exit 13
F10 Setup mode and press F5 14
HP Insight Diagnostics 15
Survey Tab 16
Test Tab 17
Status Tab 17
Help Tab 18
Protecting the Software 19
SATA Hard Drives 21
SATA Hard Drive Cables 22
PATA Device Information 23
ATA SMART Drives 23
Hard Drive Capacities 23
Chassis Designation 24
Generating Static 25
Grounding the Work Area 26
Operating Guidelines 27
Routine Care 28
Service Considerations 29
Cables and Connectors 30
Hard Drives 30
Lithium Coin Cell Battery 31
Microtower (MT) Chassis 32
Preparation for Disassembly 33
External Security Devices 34
HP Business PC Security Lock 35
Computer Access Panel 37
Front Bezel 38
Removing Bezel Blanks 39
Cable Management 40
Cable Connections 41
Expansion Cards 45
2 SATA0 SATA0 dark blue 50
3 SATA1 SATA1 white 50
4 SATA2 SATA2 light blue 50
Drive Positions 51
Removing an Optical Drive 52
Drives 49 55
Drives 53 59
Front USB Panel 63
Power Switch/LED Assembly 64
Heatsink 65
Processor 67
Rear Chassis Fan 69
Power Supply 70
System Board 71
Type 1 Battery Holder 73
Type 2 Battery Holder 73
Type 3 Battery Holder 74
A Connector Pin Assignments 75
Ethernet RJ-45 76
Ethernet AUI 76
Parallel Interface 77
Microphone 78
Headphone 78
Line-in Audio 78
Line-out Audio 78
External Infrared Transceiver 79
CD-ROM 50-Pin Connector 81
24-Pin Power 81
24-Pin MicroFit Power 82
4-Pin Power (for CPU) 82
6-Pin Power (for CPU) 82
SATA Data and Power 83
PCI Express 83
PCI Express Mini Card 85
DVI Connector 86
B Power Cord Set Requirements 87
Country-Specific Requirements 88
C Troubleshooting 89
Helpful Hints 90
Solving General Problems 91
Solving General Problems 87 93
Contacting Customer Support 97
Reference Designators 98
Secondary NIC clock crystal 103
RTC clock crystal/tie-down 103
E Specifications 104
Rated Input Current (maximum) 105
8A @ 100 VAC 4A @ 200 VAC 105

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HP Compaq dx2450 Specifications Page 95

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