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HP Dx5150 HP Business Desktop dx5150 Series Service Reference Guide, 1st Editi - Page 39

Master Boot Record Security

UPC - 882780485433

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Desktop Management Changing a User or Supervisor Password If the system is equipped with an embedded security device, refer to the HP ProtectTools Embedded Security Guide, on the Documentation CD. 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart the Computer. 2. When the Enter Password box appears, type the current User password, if a password is required. 3. Press Enter. 4. Press and hold the F10 key until you enter Computer Setup. Press Enter to bypass the title screen, if necessary. ✎ If you do not press the F10 key at the appropriate time, you must restart the computer and press and hold the F10 key again to access the utility. If you are using a PS/2 keyboard, you may see a Keyboard Error message-disregard it. 5. When the Enter Password box appears to access Computer Setup, type the current Supervisor password, if required. 6. Press Enter. 7. Select either Set Supervisor Password or Set User Password. 8. When the Enter Password box appears on the screen, type the new password and press Enter. 9. Before exiting, on the File menu, select Save Changes and Exit. ✎ To delete a password instead of changing it, when the Enter Password box appears on the screen, press Enter instead of entering the new password. This deletes the current password. Clearing Passwords If you forget the password, you cannot access the computer. Refer to the Troubleshooting Guide on the Documentation CD for instructions on clearing passwords. If the system is equipped with an embedded security device, refer to the HP ProtectTools Embedded Security Guide, on the Documentation CD. 3.5.4 Master Boot Record Security The Master Boot Record (MBR) contains information needed to successfully boot from a disk and to access the data stored on the disk. Master Boot Record Security may prevent unintentional or malicious changes to the MBR, such as those caused by some computer viruses or by the incorrect use of certain disk utilities. It also allows you to recover the "last known good" MBR, should the computer detect changes to the MBR when the system is restarted. To enable MBR Security, complete the following steps: 1. Turn on or restart the computer. If you are in Windows, click Start > Shut Down > Restart. 2. As soon as the computer is turned on, press and hold the F10 key until you enter Computer Setup. Press Enter to bypass the title screen, if necessary. Service Reference Guide, dx5150 361685-001 3-13

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

Service Reference Guide, dx5150

361685-001

3–13

Desktop Management

Changing a User or Supervisor Password

If the system is equipped with an embedded security device, refer to the

HP ProtectTools

Embedded Security Guide,

on the

Documentation CD

1. Turn on or restart the computer. If you are in Windows, click

Start > Shut Down > Restart

the Computer.

2. When the

Enter Password

box appears, type the current User password, if a password is

required.

3. Press

Enter.

4. Press and hold the

F10

key until you enter Computer Setup. Press

Enter

to bypass the title

screen, if necessary.

✎

If you do not press the

F10

key at the appropriate time, you must restart the computer and press

and hold the

F10

key again to access the utility.

If you are using a PS/2 keyboard, you may see a Keyboard Error message—disregard it.

5. When the

Enter Password

box appears to access Computer Setup, type the current

Supervisor password, if required.

6. Press

Enter.

7. Select either

Set Supervisor Password

Set User Password.

8. When the

Enter Password

box appears on the screen, type the new password and press

Enter.

9. Before exiting, on the

File

menu, select

Save Changes and Exit.

✎

To delete a password instead of changing it, when the

Enter Password

box appears on the

screen, press

Enter

instead of entering the new password. This deletes the current password.

Clearing Passwords

If you forget the password, you cannot access the computer. Refer to the

Troubleshooting Guide

on the

Documentation CD

for instructions on clearing passwords.

If the system is equipped with an embedded security device, refer to the

HP ProtectTools

Embedded Security Guide,

on the

Documentation CD

3.5.4 Master Boot Record Security

The Master Boot Record (MBR) contains information needed to successfully boot from a disk

and to access the data stored on the disk. Master Boot Record Security may prevent unintentional

or malicious changes to the MBR, such as those caused by some computer viruses or by the

incorrect use of certain disk utilities. It also allows you to recover the “last known good” MBR,

should the computer detect changes to the MBR when the system is restarted.

To enable MBR Security, complete the following steps:

1. Turn on or restart the computer. If you are in Windows, click

Start > Shut Down > Restart.

2. As soon as the computer is turned on, press and hold the

F10

key until you enter Computer

Setup. Press

Enter

to bypass the title screen, if necessary.