HP ProDesk 600 G4 Base Model Small Form Factor PC Manual de usuario Pagina 73
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Power LED ashes red four times, once every second, followed by a two second pause, and the computer beeps four times. (Beeps stop
after fth iteration but LEDs continue ashing.) Computer powered o automatically and the Power LED ashes red three times and then
white four times.
Cause Solution
Power failure (power supply is overloaded). 1. If equipped with a voltage selector, check that the voltage
selector, located on the rear of the power supply (some
models), is set to the appropriate voltage. Proper voltage
setting depends on your region.
2. Open the access panel and ensure the power supply cable is
seated into the connector on the system board.
3. Check if a device is causing the problem by removing ALL
attached devices (such as hard drives or optical drives). Power
on the system. If the system enters POST, then power o and
replace one device at a time and repeat this procedure until
failure occurs. Replace the device that is causing the failure.
Continue adding devices one at a time to ensure all devices
are functioning properly.
4. Replace the power supply.
5. Replace the system board.
Solving hard drive problems
Hard drive error occurs.
Cause Solution
Hard disk has bad sectors or has failed. 1. Type file in the taskbar search box, and then select File
Explorer from the list of applications. In the left column,
expand This PC, right-click on a drive, select Properties, and
then select the Tools tab. Under Error checking click Check.
2. Use a utility to locate and block usage of bad sectors. If
necessary, reformat the hard disk.
Disk transaction problem.
Cause Solution
Either the directory structure is bad or there is a problem with a le. Type file in the taskbar search box, and then select File Explorer
from the list of applications. In the left column, expand This PC,
right-click on a drive, select Properties, and then select the Tools
tab. Under Error checking click Check.
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 77 section. If the system still does not
recognize the new device, check to see if the device is listed within
Solving hard drive problems 65
- 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 14
- Miscellaneous parts 7 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
- Hard drives 40
- Drive cage 42
- Memory module 43
- Power supply 45
- Fan shroud 46
- Fan-sink 47
- Processor 48
- Serial connector module 50
- System board 51
- 6. Remove the lower cage (2) 52
- System board 45 53
- Connector board 54
- Computer Setup–Main 57
- Computer Setup—Security 59
- Computer Setup—Advanced 61
- Safety and comfort 67
- Helpful hints 68
- Solving general problems 69
- Solving general problems 63 71
- Solving power problems 72
- Solving hard drive problems 73
- Solving display problems 76
- Solving display problems 69 77
- Solving display problems 71 79
- Solving audio problems 80
- Solving audio problems 73 81
- Solving printer problems 82
- Solving network problems 86
- Solving network problems 79 87
- Solving memory problems 89
- Solving software problems 92
- 10 System backup and recovery 106
- Using Windows tools 108
- Restore and recovery 108
- A Battery replacement 111
- Current BIOS steps 114
- Nonvolatile memory usage 116
- Nonvolatile memory usage 109 117
- Questions and answers 118
- Using HP Sure Start 119
- C Power cord set requirements 120
- Country-specic requirements 121
- D Specications 122
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