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HP ProDesk 400 G4 Micro Maintenance and Service Guide - Page 123

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Nonvolatile memory type System BIOS Amount (size) Does this memory store customer data? Does this memory retain data when power is removed? 4-megabytes to Yes Yes 5-megabytes Intel 1.5-megabytes Yes Yes Management or 5-megabytes Engine Firmware (present in only specific ZBook and EliteBook models. For more information, go to http://www.hp.com/ support, and select your country. Select Drivers & Downloads, and then follow the on-screen instructions.) What is the purpose of this memory? How is data input into this memory? How is this memory writeprotected? Stores system BIOS code and computer configuration data. System BIOS code is programmed at the factory. Code is updated when the system BIOS is updated. Configuration data and settings are input using the Computer Setup (BIOS) or a custom utility. NOTE: Writing data to this ROM in an inappropriate manner can render the computer nonfunctional. A utility is required for writing data to this memory and is available on the HP website; go to http://www.hp.com/ support, and select your country. Select Drivers & Downloads, and then follow the on-screen instructions. Stores Management Engine Code, Settings, Provisioning Data and iAMT third-party data store. Management Engine Code is programmed at the factory. Code is updated via Intel secure firmware update utility. Unique Provisioning Data can be entered at the factory or by an administrator using the Management Engine (MEBx) setup utility. The third party data store contents can be populated by a remote management console or local applications that have been registered by an administrator to have access to the space. The Intel chipset is configured to enforce hardware protection to block all direct read/write access to this area. An Intel utility is required for updating the firmware. Only firmware updates digitally signed by Intel can be applied using this utility. Nonvolatile memory 115

Section	Page
Product features	9
Standard configuration features	9
Front panel components	10
Rear panel components	11
Illustrated parts catalog	12
Serial number location	12
Computer major components	12
Miscellaneous parts	15
Routine care, SATA drive guidelines, and disassembly preparation	22
Electrostatic discharge information	22
Generating static	22
Preventing electrostatic damage to equipment	23
Personal grounding methods and equipment	23
Grounding the work area	23
Recommended materials and equipment	24
Operating guidelines	24
Routine care	25
General cleaning safety precautions	25
Cleaning the computer case	25
Cleaning the keyboard	25
Cleaning the monitor	26
Cleaning the mouse	26
Service considerations	26
Tools and software requirements	26
Screws	26
Cables and connectors	27
Hard Drives	27
Lithium coin cell battery	27
SATA hard drives	28
SMART ATA drives	28
Removal and replacement procedures	29
Preparation for disassembly	29
Access panel	30
Front bezel	31
Speaker	32
Card reader module	33
Hood sensor module	34
Serial port module	35
Fan	36
Drive cage	37
3.5-inch drive	39
2.5-inch drive	40
Memory module	41
Expansion card	42
Power supply	45
Fan-sink	46
Processor	48
System board	49
Computer Setup (F10) Utility	51
Computer Setup (F10) Utilities	51
Using Computer Setup (F10) Utilities	51
Computer Setup–Main	53
Computer Setup—Security	55
Computer Setup—Advanced	57
Recovering the Configuration Settings	62
Troubleshooting without diagnostics	63
Safety and comfort	63
Before you call for technical support	63
Helpful hints	64
Solving general problems	65
Solving power problems	69
Solving hard drive problems	70
Solving media card reader problems	72
Solving display problems	73
Solving audio problems	77
Solving printer problems	79
Solving keyboard and mouse problems	80
Solving hardware installation problems	83
Solving network problems	84
Solving memory problems	88
Solving USB flash drive problems	89
Solving front panel component problems	90
Solving Internet access problems	90
Solving software problems	92
POST error messages and diagnostic front panel LEDs and audible codes	93
POST numeric codes and text messages	93
Interpreting system validation diagnostic front panel LEDs and audible codes	98
Password security and resetting CMOS	100
Resetting CMOS and/or the password jumper	101
Changing a Setup or Power-on password	102
Deleting a Setup or Power-on password	103
Using HP PC Hardware Diagnostics (UEFI)	104
Downloading HP PC Hardware Diagnostics (UEFI) to a USB device	104
System backup and recovery	106
Backing up, restoring, and recovering in Windows 10	106
Creating recovery media and backups	106
Creating HP Recovery media (select products only)	106
Using Windows tools	107
Restore and recovery	107
Recovering using HP Recovery Manager	108
What you need to know before you get started	108
Using the HP Recovery partition (select products only)	109
Using HP Recovery media to recover	109
Changing the computer boot order	109
Removing the HP Recovery partition (select products only)	109
Backing up, restoring, and recovering in Windows 7	110
Creating recovery media	110
Creating recovery media using HP Recovery Manager (select models only)	111
Creating recovery discs with HP Recovery Disc Creator (select models only)	112
Creating recovery discs	112
Backing up your information	112
System Restore	113
System Recovery	113
System Recovery when Windows is responding	114
System Recovery when Windows is not responding	114
System Recovery using recovery media (select models only)	115
Using HP Recovery Disc operating system discs (select models only)	115
Battery replacement	117
Statement of memory volatility	120
Nonvolatile memory	122
Questions and answers	125
Using HP Sure Start (select models only)	126
Power cord set requirements	127
General requirements	127
Japanese power cord requirements	127
Country-specific requirements	128
Specifications	129

Match case Limit results 1 per page

Nonvolatile

memory type

Amount (size)

Does this

memory store

customer data?

Does this

memory retain

data when

power is

removed?

What is

the purpose of

this memory?

How is data

input into this

memory?

How is this

memory write-

protected?

System BIOS

4-megabytes to

5-megabytes

Yes

Stores system

BIOS code and

computer

conﬁguration

data.

System BIOS

code is

programmed at

the factory. Code

is updated when

the system BIOS

is updated.

Conﬁguration

data and

settings are

input using

the Computer

Setup (BIOS) or a

custom utility.

NOTE:

Writing

data to this ROM

in an

inappropriate

manner can

render

the computer

nonfunctional.

A utility is

required for

writing data to

this memory and

is available on

the HP website;

go to

http://www.hp.com/

support

, and

select your

country. Select

Drivers &

Downloads

, and

then follow

the on-screen

instructions.

Intel

Management

Engine Firmware

(present in only

speciﬁc

ZBook

and EliteBook

models. For

information, go

http://www.hp.com/

support

, and

select your

country. Select

Drivers &

Downloads

, and

then follow

the on-screen

instructions.)

1.5-megabytes

or 5-megabytes

Yes

Stores

Management

Engine Code,

Settings,

Provisioning

Data and iAMT

third-party data

store.

Management

Engine Code is

programmed at

the factory. Code

is updated via

Intel secure

ﬁrmware

update

utility. Unique

Provisioning

Data can be

entered at

the factory or by

an administrator

using

the Management

Engine (MEBx)

setup utility. The

third party data

store contents

can be

populated by a

remote

management

console or local

applications that

have been

registered by an

administrator to

have access to

the space.

The Intel chipset

conﬁgured

enforce

hardware

protection to

block all direct

read/write

access to this

area. An Intel

utility is required

for updating

the

ﬁrmware.

Only

ﬁrmware

updates digitally

signed by Intel

can be applied

using this utility.

Nonvolatile memory

115