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HP Dx5150 HP Business Desktop dx5150 Series Service Reference Guide, 1st Editi - Page 36

Security Features Overview

UPC - 882780485433

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Desktop Management The following table and sections refer to managing security features of your computer locally through the Computer Setup Utilities (F10). Security Features Overview Option Description Supervisor Password Allows you to set and enable Supervisor (administrator) password. ✎ If the Supervisor password is set, it is required to change Computer Setup options, flash the ROM, and make changes to certain plug and play settings under Windows. See the Troubleshooting Guide on the Documentation CD for more information. User Password Allows you to set and enable a User password. ✎ If the User password is set, it is required to access the computer when power is turned on. See the Troubleshooting Guide on the Documentation CD for more information. Device Security Enables/disables serial ports, parallel port, front USB ports, system audio, and network controllers (some models). Network Service Boot Enables/disables the computer's ability to boot from an operating system installed on a network server. (Feature available on NIC models only; the network controller must reside on the PCI bus or be embedded on the system board.) System IDs Allows you to set: • Asset tag (18-byte identifier) and ownership Tag (80-byte identifier displayed during POST). • Chassis serial number or Universal Unique Identifier (UUID) number. The UUID can only be updated if the current chassis serial number is invalid. (These ID numbers are normally set in the factory and are used to uniquely identify the system.) Keyboard locale setting (for example, English or German) for System ID entry. Master Boot Record Security Allows you to enable or disable Master Boot Record (MBR) Security. When enabled, the BIOS rejects all requests to write to the MBR on the current bootable disk. Each time the computer is powered on or rebooted, the BIOS compares the MBR of the current bootable disk to the previously-saved MBR. If changes are detected, you are given the option of saving the MBR on the current bootable disk, restoring the previously-saved MBR, or disabling MBR Security. You must know the setup password, if one is set. ✎ Disable MBR Security before intentionally changing the formatting or partitioning of the current bootable disk. Several disk utilities (such as FDISK and FORMAT) attempt to update the MBR. If MBR Security is enabled and disk accesses are being serviced by the BIOS, write requests to the MBR are rejected, causing the utilities to report errors. If MBR Security is enabled and disk accesses are being serviced by the operating system, any MBR change will be detected by the BIOS during the next reboot, and an MBR Security warning message will be displayed. ✎ For more information about Computer Setup, see the Computer Setup (F10) Utility Guide on the Documentation CD. Support for security features may vary depending on the specific computer configuration. 3-10 361685-001 Service Reference Guide, dx5150

Section	Page
Contents	5
Installing the Operating System	9
1.1 Installing or Upgrading Device Drivers	9
1.2 Transferring Files and Settings	10
1.3 Backing Up and Restoring Files	10
1.3.1 Creating a Backup File-Windows XP Professional	10
1.3.2 Restoring from the Backup File-Windows XP Professional	10
1.4 Converting to NTFS	10
1.5 HP Software	11
Setup Utilities and Diagnostics Features	13
2.1 Power-On Self-Test (POST)	13
2.2 Computer Setup (F10) Utilities	14
2.2.1 Using Computer Setup (F10) Utilities	14
2.2.2 Computer Setup Menu	16
2.3 Recovering the Configuration Settings	20
2.3.1 Backing up the CMOS	20
2.3.2 Restoring the CMOS	21
2.4 Diagnostics for Windows	21
2.4.1 Detecting Diagnostics for Windows	21
2.4.2 Installing Diagnostics for Windows	21
2.4.3 Using Categories in Diagnostics for Windows	22
2.4.4 Running Diagnostic Tests in Diagnostics for Windows	24
2.5 Configuration Record	25
2.5.1 Installing Configuration Record	25
2.5.2 Running Configuration Record	25
2.6 Remote Diagnostics Enabling Agent	26
2.6.1 Installing/Upgrading Remote Diagnostics Enabling Agent	26
2.6.2 Running the Remote Diagnostics Enabling Agent	26
2.7 Protecting the Software	26
2.8 Restoring the Software	26
Desktop Management	27
3.1 Initial Configuration and Deployment	27
3.2 Remote System Installation	28
3.3 Software Updating and Management	28
3.3.1 HP Client Manager Software	28
3.3.2 Altiris Client Management Solutions	29
3.3.3 System Software Manager	29
3.3.4 Proactive Change Notification (PCN)	30
3.3.5 Subscriber’s Choice	30
3.4 ROM Flash	30
3.4.1 Remote ROM Flash	30
3.4.2 HPQ Flash	31
3.4.3 FailSafe Boot Block ROM	31
3.4.4 Replicating Your Setup	31
3.4.5 Dual-State Power Button	34
3.4.6 World Wide Web Site	35
3.4.7 Building Blocks and Partners	35
3.5 Asset Tracking and Security	35
3.5.1 Password Security	37
3.5.2 Establishing a Supervisor Password with Computer Setup	37
3.5.3 Establishing a User Password with Computer Setup	37
3.5.4 Master Boot Record Security	39
3.5.5 Before You Partition or Format the Current Bootable Disk	41
3.5.6 Cable Lock Provision	41
3.6 Fault Notification and Recovery	41
3.6.1 Surge-Tolerant Power Supply	41
3.6.2 Thermal Sensor	41
Serial and Parallel ATA Drive Guidelines and Features	43
4.1 SATA Hard Drive Information	43
4.1.1 SATA Data Cable	43
4.1.2 SATA Power Cable	44
4.2 PATA Hard Drive Information	44
4.2.1 PATA Data Cable	45
4.2.2 PATA Power Cable	45
4.2.3 PATA Cable Layout	46
4.3 PATA Drive Installation Guidelines	46
4.3.1 PATA Device Classes	47
4.4 ATA SMART Drives	47
4.5 Drive Capacities	47
4.6 SATA BIOS	48
4.6.1 Legacy Mode	48
4.6.2 Native Mode	49
4.7 Mixed Devices Boot and Drive Letter Ordering	49
Identifying the Chassis, Routine Care, and Disassembly Preparation	51
5.1 Chassis Designations	51
5.1.1 Microtower (MT)	51
5.1.2 Small Form Factor (SFF)	52
5.2 Electrostatic Discharge Information	52
5.2.1 Generating Static	53
5.2.2 Preventing Electrostatic Damage to Equipment	53
5.2.3 Personal Grounding Methods and Equipment	53
5.2.4 Grounding the Work Area	54
5.2.5 Recommended Materials and Equipment	54
5.3 Operating Guidelines	55
5.4 Routine Care	55
5.4.1 General Cleaning Safety Precautions	55
5.4.2 Cleaning the Computer Case	56
5.4.3 Cleaning the Keyboard	56
5.4.4 Cleaning the Monitor	56
5.4.5 Cleaning the Mouse	57
5.5 Service Considerations	57
5.5.1 Power Supply Fan	57
5.5.2 Tools and Software Requirements	57
5.5.3 Screws	57
5.5.4 Cables and Connectors	58
5.5.5 Hard Drives	58
5.5.6 Lithium Coin Cell Battery	59
Removal and Replacement Procedures- Microtower (MT) Chassis	61
6.1 Preparation for Disassembly	61
6.2 External Security Devices	62
6.2.1 Installing a Cable Lock	62
6.2.2 Installing a Padlock	62
6.3 Access Panel	63
6.4 Front Bezel	64
6.5 Front Drive Bezels	65
6.5.1 5.25\	65
6.5.2 Diskette Drive Bezel	66
6.5.3 3.5\	66
6.6 Cable Management	67
6.6.1 Cable Connections	68
6.7 Memory Modules	69
6.8 Expansion Cards	70
6.8.1 Expansion Slot Cover	70
6.8.2 PCI Expansion Card	71
6.9 Drives	73
6.9.1 Drive Positions	73
6.9.2 Removing a Drive	74
6.9.3 Installing a Drive	77
6.10 Chassis Fan	80
6.11 Front I/O Panel Housing Assembly	81
6.12 Front I/O Devices	82
6.13 Power Switch Assembly	83
6.14 Heatsink	85
6.15 Processor	86
6.16 System Board	87
6.17 Battery	89
6.17.1 Type 1 Battery Holder	90
6.17.2 Type 2 Battery Holder	91
6.17.3 Type 3 Battery Holder	92
6.18 Speaker	93
6.19 Power Supply	94
Removal and Replacement Procedures- Small Form Factor (SFF) Chassis	95
7.1 Preparation for Disassembly	95
7.2 External Security Devices	96
7.2.1 Cable Lock	96
7.2.2 Padlock	97
7.3 Computer Access Panel	98
7.4 Front Bezel	99
7.5 Front Drive Bezels	100
7.6 Memory Modules	101
7.7 PCI Expansion Card	102
7.8 Drives	104
7.8.1 Drive Positions	104
7.8.2 Cable Management	105
7.8.3 Cable Connections	107
7.8.4 Optical Drive	108
7.8.5 External 3.5-inch Drive	111
7.8.6 Primary Hard Drive	113
7.9 Front I/O Devices	115
7.10 Power Switch Assembly	116
7.11 Speaker	117
7.12 Chassis Fan	118
7.13 Battery	119
7.13.1 Type 1 Battery Holder	120
7.13.2 Type 2 Battery Holder	121
7.14 Heatsink Assembly	122
7.15 Processor	123
7.16 System Board	124
7.17 Power Supply	126
Connector Pin Assignments	127
Power Cord Set Requirements	137
POST Error Messages	139
Troubleshooting Without Diagnostics	147
Memory	175

Match case Limit results 1 per page

3–10

361685-001

Service Reference Guide, dx5150

Desktop Management

The following table and sections refer to managing security features of your computer locally

through the Computer Setup Utilities (F10).

Security Features Overview

Option

Description

Supervisor

Password

Allows you to set and enable Supervisor (administrator) password.

✎

If the Supervisor password is set, it is required to change Computer Setup

options, flash the ROM, and make changes to certain plug and play settings

under Windows.

See the

Troubleshooting Guide

on the

Documentation CD

for more information.

User

Password

Allows you to set and enable a User password.

✎

If the User password is set, it is required to access the computer when power is

turned on.

See the

Troubleshooting Guide

on the

Documentation CD

for more information.

Device

Security

Enables/disables serial ports, parallel port, front USB ports, system audio, and

network controllers (some models).

Network

Service Boot

Enables/disables the computer’s ability to boot from an operating system

installed on a network server. (Feature available on NIC models only; the

network controller must reside on the PCI bus or be embedded on the system

board.)

System IDs

Allows you to set:

• Asset tag (18-byte identifier) and ownership Tag (80-byte identifier

displayed during POST).

• Chassis serial number or Universal Unique Identifier (UUID) number. The

UUID can only be updated if the current chassis serial number is invalid.

(These ID numbers are normally set in the factory and are used to uniquely

identify the system.)

Keyboard locale setting (for example, English or German) for System ID entry.

Master Boot

Record

Security

Allows you to enable or disable Master Boot Record (MBR) Security.

When enabled, the BIOS rejects all requests to write to the MBR on the current

bootable disk. Each time the computer is powered on or rebooted, the BIOS

compares the MBR of the current bootable disk to the previously-saved MBR. If

changes are detected, you are given the option of saving the MBR on the

current bootable disk, restoring the previously-saved MBR, or disabling MBR

Security. You must know the setup password, if one is set.

✎

Disable MBR Security before intentionally changing the formatting or

partitioning of the current bootable disk. Several disk utilities (such as FDISK

and FORMAT) attempt to update the MBR.

If MBR Security is enabled and disk accesses are being serviced by the BIOS,

write requests to the MBR are rejected, causing the utilities to report errors.

If MBR Security is enabled and disk accesses are being serviced by the operating

system, any MBR change will be detected by the BIOS during the next reboot, and an

MBR Security warning message will be displayed.

✎

For more information about Computer Setup, see the

Computer Setup (F10) Utility Guide

on the

Documentation CD

Support for security features may vary depending on the specific computer configuration.