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6 Troubleshooting without diagnostics
This chapter provides information on how to identify and correct minor problems, such as USB devices, hard
drive, graphics, audio, memory, and software problems. If you encounter problems with the computer, refer to
the tables in this chapter for probable causes and recommended solutions.
NOTE: For information on specic error messages that may appear on the screen during Power-On Self-Test
(POST) at startup, refer to POST error messages and diagnostic front panel LEDs and audible codes on page 86.
Safety and comfort
WARNING! Misuse of the computer or failure to establish a safe and comfortable work environment may result
in discomfort or serious injury. Refer to the Safety & Comfort Guide at http://www.hp.com/ergo for more
information on choosing a workspace and creating a safe and comfortable work environment. For more
information, refer to the Safety & Regulatory Information guide.
Before you call for technical support
If you are having problems with the computer, try the appropriate solutions below to try to isolate the exact
problem before calling for technical support.
● Run the HP diagnostic tool.
● Run the hard drive self-test in Computer Setup. Refer to Computer Setup (F10) Utility on page 48 for more
information.
● Check the Power LED on the front of the computer to see if it is ashing red. The ashing lights are error
codes that will help you diagnose the problem. Refer to POST error messages and diagnostic front panel
LEDs and audible codes on page 86 for more information.
● If the screen is blank, plug the monitor into a dierent video port on the computer if one is available. Or,
replace the monitor with a monitor that you know is functioning properly.
● If you are working on a network, plug another computer with a dierent cable into the network connection.
There may be a problem with the network plug or cable.
● If you recently added new hardware, remove the hardware and see if the computer functions properly.
● If you recently installed new software, uninstall the software and see if the computer functions properly.
● Boot the computer to the Safe Mode to see if it will boot without all of the drivers loaded. When booting
the operating system, use “Last Known Conguration.”
● Refer to the comprehensive online technical support at http://www.hp.com/support.
● Refer to Helpful hints on page 61 in this guide.
To assist you in resolving problems online, HP Instant Support Professional Edition provides you with self-solve
diagnostics. If you need to contact HP support, use HP Instant Support Professional Edition's online chat feature.
Access HP Instant Support Professional Edition at: http://www.hp.com/go/ispe.
Access the Business Support Center (BSC) at http://www.hp.com/go/bizsupport for the latest online support
information, software and drivers, proactive notication, and worldwide community of peers and HP experts.
60 Chapter 6 Troubleshooting without diagnostics
- Maintenance and Service Guide 1
- About This Book 3
- Table of contents 5
- 1 Product features 9
- Front panel components 10
- Rear panel components 11
- 2 Illustrated parts catalog 12
- Computer major components 5 13
- Miscellaneous parts 15
- Miscellaneous parts 9 17
- Miscellaneous parts 11 19
- Miscellaneous parts 13 21
- Miscellaneous parts 15 23
- Miscellaneous parts 17 25
- Miscellaneous parts 19 27
- Miscellaneous parts 21 29
- Generating static 30
- Grounding the work area 31
- Operating guidelines 32
- Routine care 33
- Service considerations 34
- SMART ATA drives 35
- Preparation for disassembly 36
- Access panel 37
- Optical drive 38
- Front bezel 39
- Drive cage 40
- Hard drives 41
- Memory card reader 43
- WLAN module 44
- Memory module 45
- Power supply 47
- Fan shroud 48
- Fan-sink 49
- Processor 50
- Serial connector module 52
- System board 53
- 6. Remove the lower cage (2) 54
- System board 47 55
- Computer Setup–Main 58
- Computer Setup—Security 60
- Computer Setup—Advanced 62
- Safety and comfort 68
- Helpful hints 69
- Solving general problems 70
- Solving general problems 63 71
- Solving power problems 73
- Solving hard drive problems 74
- Solving display problems 77
- Solving display problems 71 79
- Solving audio problems 81
- Solving printer problems 83
- Solving network problems 87
- Solving network problems 81 89
- Solving memory problems 90
- Solving software problems 93
- 10 System backup and recovery 107
- Using Windows tools 109
- Restore and recovery 109
- A Battery replacement 112
- Current BIOS steps 115
- Nonvolatile memory usage 117
- Questions and answers 119
- Using HP Sure Start 120
- C Power cord set requirements 121
- Country-specic requirements 122
- D Specications 123
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