HP EliteDesk 705 G3 Microtower PC Uživatelský manuál Strana 96
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Power LED ashes Red ve times, once every second, followed by a two second pause, and the computer beeps ve times. (Beeps
stop after fth iteration but LEDs continue ashing.)
Cause Solution
Memory is installed incorrectly or is bad. 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.
Solving CD-ROM and DVD problems
If you encounter CD-ROM or DVD problems, see the common causes and solutions listed in the following table
or to the documentation that came with the optional device.
System will not boot from CD-ROM or DVD drive.
Cause Solution
The device is attached to a SATA port that has been hidden in the
Computer Setup utility.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port Options.
Removable Media Boot is disabled in the Computer Setup utility. Run the Computer Setup utility and enable booting to removable
media in Advanced > Boot Options.
Network Boot is enabled in Computer Setup. Run the Computer Setup utility and disable Network Boot in
Advanced > Boot Options.
Non-bootable CD in drive. Try a bootable CD in the drive.
Boot order not correct. Run the Computer Setup utility and change boot sequence in
Advanced > Boot Options.
Drive not found (identied).
Cause Solution
Cable could be loose. Check cable connections.
The system may not have automatically recognized a newly
installed device.
See reconguration directions in the Solving Hardware
Installation Problems on page 82 section. If the system still does
not recognize the new device, check to see if the device is listed
within Computer Setup. If it is listed, the probable cause is a driver
problem. If it is not listed, the probable cause is a hardware
problem.
If this is a newly installed drive, run the Computer Setup utility
and try adding a POST delay under Advanced > Power-On
Options.
The device is attached to a SATA port that has been hidden in
Computer Setup.
Run the Computer Setup utility and ensure Device Available is
selected for the device's SATA port in Advanced > Port Options.
Drive responds slowly immediately after power-up. Run Computer Setup and increase the POST Delay in Advanced >
Power-On Options.
88 Chapter 6 Troubleshooting without diagnostics
- Maintenance and Service Guide 1
- Safety warning notice 3
- Table of contents 5
- 1 Product features 9
- Front panel components 10
- Rear panel components 11
- Serial number location 12
- 2 Illustrated parts catalog 13
- Misc parts 15
- Misc boards 17
- Generating static 19
- Grounding the work area 20
- Operating guidelines 21
- Routine care 22
- Service considerations 23
- Cables and connectors 24
- Hard Drives 24
- Lithium coin cell battery 24
- SATA hard drives 25
- SMART ATA drives 25
- Microtower (MT) chassis 26
- Access panel 27
- Front bezel 28
- Front bezel security 29
- DDR4-SDRAM DIMMs 31
- Populating DIMM sockets 31
- Installing DIMMs 32
- Expansion cards 34
- Drive positions 40
- Removing a hard drive 44
- Installing a hard drive 45
- Drive power cable 48
- Fan sink 51
- Processor 52
- Rear chassis fan 54
- Power supply 55
- System board 57
- System board callouts 58
- System board 51 59
- Computer Setup–Main 62
- Computer Setup—Security 64
- Computer Setup—Advanced 66
- Safety and comfort 72
- Helpful hints 73
- Solving general problems 74
- Solving general problems 67 75
- Solving general problems 69 77
- Solving power problems 78
- Solving hard drive problems 79
- Solving display problems 82
- Solving display problems 75 83
- Solving display problems 77 85
- Solving audio problems 86
- Solving audio problems 79 87
- Solving printer problems 88
- Solving Network Problems 92
- Solving Network Problems 85 93
- Solving memory problems 95
- Solving software problems 101
- Resetting the password jumper 109
- 9 HP PC Hardware Diagnostics 113
- 10 System backup and recovery 115
- Using Windows tools 117
- Restore and recovery 117
- Creating recovery media 120
- System Restore 122
- System Recovery 123
- Recommended Applications 126
- A Battery replacement 127
- B Power Cord Set Requirements 130
- Country-Specic Requirements 131
- C Statement of Volatility 132
- D Specications 134
- MT Specications 127 135
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