Home » HP Manuals » Desktops » HP Z840 » Manual Viewer

HP Z840 Maintenance and Service Guide - Page 92

Troubleshooting scenarios and solutions, Solving minor problems

Add to My Manuals
Save this manual to your list of manuals

Page 92 highlights

Troubleshooting scenarios and solutions This section presents troubleshooting scenarios and possible solutions for a Windows-based system. Solving minor problems Problem Cause Possible Solution Workstation appears frozen and does not shut down when the power button is pressed. Software control of the power switch is not functional. 1. Press and hold the power button for at least four seconds until the computer shuts down. 2. Disconnect the electrical plug from the outlet. 3. Restart the computer. Workstation seems to be frozen. Program in use has stopped responding to commands. 1. If possible, use the Windows Task Manager to isolate and terminate the offending process. 2. Attempt the normal Windows shutdown procedure. 3. Restart the computer using the power button. Workstation date and time display is incorrect. Real-time clock (RTC) battery might 1. need replacement. 2. Reset the date and time in the Control Panel. Replace the RTC battery. Workstation appears to pause periodically. Network driver is loaded and no network connection is established. Establish a network connection, or use Computer Setup (F10) Utility or the Microsoft Windows Device Manager to disable the network controller. Cursor does not move using the The Num Lock key might be on. arrow keys on the keypad. Press Num Lock. The Num Lock key can be disabled or enabled in Computer Setup (F10) Utility. Poor performance is experienced. Processor is hot. 1. Verify that airflow to the computer is not blocked. 2. Verify that chassis fans are connected and working properly. Some fans operate only when needed. 3. Verify that the processor heatsink is installed properly. Hard drive is full. Transfer data from the hard drive to create more space on the hard drive. Workstation powered off automatically and the Power LED flashes red 2 times (once every second), followed by a 2second pause, and then two simultaneous beeps sounded. Processor thermal protection is 1. Verify that the computer air vents are not blocked. activated. 2. Open the access panel and press the computer power A fan might be blocked or not button. turning. 3. Verify that the system fan is running. OR 4. Verify that the processor heatsink fan spins. If the fan is The processor heatsink is not not spinning, verify that the heatsink fan cable is plugged properly attached to the processor. into the system board connector and that the heatsink is properly seated. 5. Replace the processor heatsink. System does not power on, and the LEDs on the front of the computer are not flashing. System cannot power on. Press and hold the power button for less than four seconds. If the hard drive LED turns white: 1. To find a faulty device, remove all devices one at a time: a. Disconnect AC power to the computer. b. Remove a device. c. Reconnect AC power and power on the computer. 82 Chapter 4 Diagnostics and troubleshooting

Section	Page
Hardware overview	11
HP Z440 Workstation components	11
HP Z440 Workstation front panel components	12
HP Z440 Workstation rear panel components	13
HP Z440 Workstation chassis components	14
HP Z440 Workstation system board components	15
HP Z440 Workstation system board architecture	16
HP Z440 Workstation specifications	16
HP Z640 Workstation components	18
HP Z640 Workstation front panel components	18
HP Z640 Workstation rear panel components	19
HP Z640 Workstation chassis components	20
HP Z640 Workstation system board components	21
HP Z640 Workstation system board architecture	22
HP Z640 Workstation system board riser architecture	23
HP Z640 Workstation specifications	23
HP Z840 Workstation components	25
HP Z840 Workstation front panel components	25
HP Z840 Workstation rear panel components	26
HP Z840 Workstation chassis components	27
HP Z840 Workstation system board components	28
HP Z840 Workstation system board architecture	29
HP Z840 Workstation specifications	30
Environmental specifications	31
Ensuring proper ventilation	32
System management	33
Power management features	33
ERP compliance mode	33
Hyper-Threading Technology (HTT)	34
SATA Power Management	34
Intel Turbo Boost Technology	34
BIOS ROM	34
Computer Setup (F10) Utility	35
Computer Setup (F10) Utility functions	35
Accessing Computer Setup (F10) Utility	36
Computer Setup (F10) Utility menu	37
Desktop management	42
Initial computer configuration and deployment	43
Installing a remote system	43
Copying a setup configuration to another computer	43
Updating and managing software	44
LANDesk Software	44
HP Driver Pack	44
HP SoftPaq Download Manager	44
HP System Software Manager	45
ROM Flash	45
Remote ROM Flash	45
HPQFlash	45
FailSafe Boot Block	45
Recovering the computer from Boot Block Recovery mode	46
Workstation security	46
Asset tracking	46
SATA hard drive security	47
DriveLock applications	47
Using DriveLock	48
Enabling DriveLock	48
Password security	49
Establishing a setup password using Computer Setup (F10) Utility	49
Establishing a power-on password using computer setup	49
Entering a power-on password	50
Entering a setup password	50
Changing a power-on or setup password	50
Deleting a power-on or setup password	51
National keyboard delimiter characters	52
Clearing passwords	52
Chassis security	52
Smart Cover Sensor	52
Setting the protection level	53
Cable lock (optional)	53
Fault notification and recovery	53
ECC fault prediction	53
Thermal sensors	53
Dual-state power button	53
Changing the power button configuration (Windows only)	54
Component replacement information and guidelines	55
Warnings and cautions	55
Service considerations	56
Tools and software requirements	56
Electrostatic discharge (ESD) information	56
Product recycling	58
Component replacement guidelines	58
Battery	58
Cable management	59
Processor and processor heatsink	60
Expansion slots	61
Card configuration restrictions for power supplies	61
Choosing an expansion card slot	61
HP Z440 Workstation slot identification and description	62
HP Z440 Workstation installation sequence recommendations	63
HP Z640 Workstation slot identification and description	64
HP Z640 Workstation installation sequence recommendations	64
HP Z840 Workstation slot identification and description	66
HP Z840 Workstation installation sequence recommendations	67
Hard drives and optical drives	69
Handling hard drives	69
Removal and replacement tips	69
Drive installation and cabling scenarios	69
HP Z440 Workstations — Intel AHCI SATA controller guidelines	70
HP Z440 Workstations — LSI 9217-4i4e RAID controller guidelines	71
HP Z640 Workstations — Intel AHCI SATA controller guidelines	72
HP Z640 Workstations — LSI 9217-4i4e RAID controller guidelines	73
HP Z840 Workstation cabling guidelines	74
Memory	75
Supported DIMM configurations	75
BIOS errors and warnings	75
DIMM installation guidelines	75
HP Z440 Workstation DIMM installation order	76
HP Z640 Workstation DIMM installation order	77
HP Z840 Workstation DIMM installation order	78
Power supply	79
Power supply specifications	79
HP Z440 power supply specifications	79
HP Z640 power supply specifications	80
HP Z840 power supply specifications	81
Power consumption and heat dissipation	82
Resetting the power supply	82
System board	82
System cabling	83
HP Z440 Workstation system cabling	83
HP Z640 Workstation system cabling	84
HP Z840 Workstation system cabling	85
Diagnostics and troubleshooting	86
Calling support	86
Locating ID labels	87
Locating warranty information	87
Diagnosis guidelines	88
Diagnosis at startup	88
Diagnosis during operation	88
Troubleshooting checklist	88
HP troubleshooting resources and tools	89
Online support	89
Troubleshooting a problem	89
Instant Support and Active Chat	89
Customer Advisories, Customer and Security Bulletins, and Customer Notices	90
Product Change Notifications	90
Helpful hints	90
At startup	90
During operation	91
Customer Self-Repair program	91
Troubleshooting scenarios and solutions	92
Solving minor problems	92
Solving hard drive problems	94
Solving display problems	95
Solving audio problems	97
Solving printer problems	98
Solving power supply problems	98
Testing power supply	98
Diagnostic codes and errors	100
Diagnostic LED and audible (beep) codes	100
LED color definitions	102
POST error messages	102
Using HP PC Hardware Diagnostics (UEFI)	107
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device	107
Additional BIOS crisis recovery tool	108
Using Remote HP PC Hardware Diagnostics (UEFI) settings	108
Customizing Remote HP PC Hardware Diagnostics (UEFI) settings	108
Configuring password security and resetting CMOS	109
Preparing to configure passwords	109
Resetting the password jumper	110
Clearing and resetting the CMOS	111
Using the CMOS button to reset CMOS	111
Using Computer Setup (F10) Utility to reset CMOS	112
Linux technical notes	113
System RAM	113
Audio	113
Network cards	114
Hyper-Threading Technology	114
NVIDIA Graphics Workstations	114
AMD Graphics Workstations	115
Configuring RAID devices	116
RAID hard drive maximum and associated storage controller options	116
Supported RAID configurations	117
Configuring Intel SATA RAID	118
Configuring system BIOS	118
Configuring RAID with the Intel utility	119
Configuring RAID on an LSI 2308 or LSI 9217-4i4e controller	120
RAID 0 configuration	120
RAID 1 configuration	121
RAID 1E/10 configuration	122
Configuring RAID on an LSI 9270-8i MegaRAID controller	123
RAID 0	123
Software RAID solution	124
Software RAID considerations	124
Performance considerations	124
Configuring software RAID	125
System board designators	126
HP Z440 and Z640 Workstation system board designators	126
HP Z840 Workstations	128
Statement of Volatility	131
Z440 Workstation	131
Z640 Workstation	131
Z840 Workstation	132

Match case Limit results 1 per page

Troubleshooting scenarios and solutions

This section presents troubleshooting scenarios and possible solutions for a Windows-based system.

Solving minor problems

Problem

Cause

Possible Solution

Workstation appears frozen and

does not shut down when the

power button is pressed.

Software control of the power

switch is not functional.

Press and hold the power button for at least four seconds

until the computer shuts down.

Disconnect the electrical plug from the outlet.

Restart the computer.

Workstation seems to be frozen.

Program in use has stopped

responding to commands.

If possible, use the Windows Task Manager to isolate and

terminate the

oﬀending

process.

Attempt the normal Windows shutdown procedure.

Restart the computer using the power button.

Workstation date and time

display is incorrect.

Real-time clock (RTC) battery might

need replacement.

Reset the date and time in the Control Panel.

Replace the RTC battery.

Workstation appears to pause

periodically.

Network driver is loaded and no

network connection is established.

Establish a network connection, or use Computer Setup (F10)

Utility or the Microsoft Windows Device Manager to disable the

network controller.

Cursor does not move using the

arrow keys on the keypad.

The

Num Lock

key might be on.

Press

Num Lock

. The Num Lock key can be disabled or enabled

in Computer Setup (F10) Utility.

Poor performance is

experienced.

Processor is hot.

Verify that

airﬂow

to the computer is not blocked.

Verify that chassis fans are connected and working

properly. Some fans operate only when needed.

Verify that the processor heatsink is installed properly.

Hard drive is full.

Transfer data from the hard drive to create more space on the

hard drive.

Workstation powered

oﬀ

automatically and the Power

LED

ﬂashes

red 2 times (once

every second), followed by a 2-

second pause, and then two

simultaneous beeps sounded.

Processor thermal protection is

activated.

A fan might be blocked or not

turning.

The processor heatsink is not

properly attached to the processor.

Verify that the computer air vents are not blocked.

Open the access panel and press the computer power

button.

Verify that the system fan is running.

Verify that the processor heatsink fan spins. If the fan is

not spinning, verify that the heatsink fan cable is plugged

into the system board connector and that the heatsink is

properly seated.

Replace the processor heatsink.

System does not power on, and

the LEDs on the front of the

computer are not

ﬂashing.

System cannot power on.

Press and hold the power button for less than four seconds. If

the hard drive LED turns white:

ﬁnd

a faulty device, remove all devices one at a time:

Disconnect AC power to the computer.

Remove a device.

Reconnect AC power and power on the computer.

Chapter 4

Diagnostics and troubleshooting