HP EliteDesk 800 G4 Workstation Edition User Manual Page 111
- Page / 151
- Table of contents
- BOOKMARKS
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Network controller stopped working when an expansion board was added to the computer.
Cause Solution
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
Network controller stops working without apparent cause.
Cause Solution
The cable is not securely connected. Ensure that the cable is securely attached to the network
connector and that the other end of the cable is securely attached
to the correct device.
The network controller is defective. Contact an authorized service provider.
New network card will not boot.
Cause Solution
New network card may be defective or may not meet industry-
standard specications.
Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.
Cannot connect to network server when attempting Remote System Installation.
Cause Solution
The network controller is not congured properly. Verify Network Connectivity, that a DHCP Server is present, and
that the Remote System Installation Server contains the NIC
drivers for your NIC.
System setup utility reports unprogrammed EEPROM.
Cause Solution
Unprogrammed EEPROM. Contact an authorized service provider.
Solving memory problems
If you encounter memory problems, some common causes and solutions are listed in the following table.
CAUTION: Power may still be supplied to the DIMMs when the computer is turned o (depending on the
Management Engine (ME) settings). To avoid damage to the DIMMs or the system board, you must unplug the
computer power cord before attempting to reseat, install, or remove a memory module.
For those systems that support ECC memory, HP does not support mixing ECC and non-ECC memory.
Otherwise, the computer will not boot the operating system.
Solving memory problems 103
- 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
- Computer major components 7 15
- Miscellaneous parts 16
- Generating static 17
- Grounding the work area 18
- Operating guidelines 19
- Routine care 20
- Service considerations 21
- Cables and connectors 22
- Hard Drives 22
- Lithium coin cell battery 22
- SATA hard drives 23
- SATA data cable 23
- SMART ATA drives 23
- Cable management 24
- Preparation for disassembly 25
- Access panel 26
- Front bezel 27
- Front bezel security 28
- Removing bezel blanks 29
- System board connections 31
- Populating DIMM sockets 32
- Removing and installing DIMMs 33
- Drive cage 35
- Drive positions 36
- Removing a 5.25-inch drive 37
- Installing a 5.25-inch drive 38
- Expansion cards 53
- Optional rear port 58
- Rear fan 59
- Hood lock (solenoid) 60
- Hood sensor 61
- Option board 62
- Fan sink 63
- Up to 65 W processor models 64
- 95 W processor models 64
- Processor 66
- WLAN module 67
- Card reader 69
- Power supply 70
- Antennas 71
- System board 73
- System board callouts 76
- Computer Setup–Main 79
- Computer Setup—Security 81
- Computer Setup—Advanced 84
- Computer Setup—UEFI Drivers 89
- Safety and comfort 90
- Helpful hints 91
- Solving general problems 92
- Solving general problems 85 93
- Solving general problems 87 95
- Solving power problems 96
- Solving hard drive problems 97
- Solving display problems 100
- Solving display problems 93 101
- Solving audio problems 103
- Solving printer problems 105
- Solving Network Problems 109
- Solving memory problems 111
- Solving software problems 117
- Resetting the password jumper 125
- A Battery replacement 133
- B Power cord set requirements 136
- Country-Specic Requirements 137
- Nonvolatile memory usage 140
- Nonvolatile memory usage 133 141
- Questions and answers 142
- D Linux technical notes 144
- Hyper-Threading Technology 145
- NVIDIA graphics workstations 146
- AMD graphics workstations 147
- E Specications 148
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