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Lenovo ThinkCentre M55 Hardware Maintenance Manual - Page 54

Administrator Password, Setting, changing, and deleting a password, Selecting a startup device

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Administrator Password Setting an Administrator Password deters unauthorized persons from changing configuration settings. If you are responsible for maintaining the settings of several computers, you might want to set an Administrator Password. After you set an Administrator Password, a password prompt is displayed each time you try to access the Setup Utility program. If both the user and administrator passwords are set, you can type either password. However, to change any configuration settings, you must use your administrator password. Setting, changing, and deleting a password To set, change, or delete a password, do the following: Note: A password can be any combination of up to seven characters (A- Z, a-z, and 0-9) 1. Start the Setup Utility program (see "Starting the Setup Utility program" on page 47) 2. From the Setup Utility program menu, select Security. 3. Select Set Passwords. Read the information displayed on the right side of the screen. Selecting a startup device If the computer does not start up (boot) from a device such as the CD-ROM, diskette, or hard disk as expected, use one of the following procedures to select a startup device. Selecting a temporary startup device Use this procedure to startup from any boot device. Note: Not all CDs, hard disks, and diskettes are startable (bootable) 1. If your computer is already on when you start this procedure, shut down the operating system and turn off the computer. 2. To open the Startup Device Menu, repeatedly press the F12 key as you turn on the computer. Note: Selecting a startup device from this list does not permanently change the startup sequence; it is valid for one boot cycle only. Changing the startup device sequence To view or permanently change the configured startup device sequence, do the following: 1. Start the Setup Utility program (see "Starting the Setup Utility program" on page 47) 2. Select Startup. 3. Select Startup Sequence. See the information displayed on the right side of the screen. 4. Select the devices for the Primary Startup Sequence, the Automatic Startup Sequence, and the Error Startup Sequence. 5. Select Exit from the Setup Utility menu and then Save Settings or Save and exit the Setup Utility. If you have changed these settings and want to return to the default settings, select Load Default Settings on the Exit menu. 48 Hardware Maintenance Manual

Section	Page
Chapter 1. About this manual	7
Important Safety Information	7
Strategy for replacing FRUs for CTO, CMV, and GAV products	8
Product definition	8
FRU Identification for CTO, CMV, and GAV products	8
Important information about replacing RoHS compliant FRUs	9
Chapter 2. Safety information	11
General safety	11
Electrical safety	11
Safety inspection guide	13
Handling electrostatic discharge-sensitive devices	13
Grounding requirements	14
Safety notices (multi-lingual translations)	14
Chapter 3. General information	37
The ThinkVantage™ Productivity Center program	37
Additional information resources	37
Physical specifications	37
Types 8009, 8791, 8795, 8799, 8803, and 8807	37
Types 6488, 8010, 8792, 8796, 8800, 8804, 8808, and 9168	38
Types 8011, 8793, 8797, 8801, 8805, 8810, and 9166	39
Types 6487, 8012, 8794, 8798, 8802, 8806, 8811, and 9167	40
Chapter 4. General Checkout	43
Problem determination tips	44
Chapter 5. Diagnostics	47
PC-Doctor for Windows	47
PC-Doctor for DOS	47
Creating a diagnostic CD image	47
Creating diagnostic diskettes	48
Running diagnostics from the CD or diskettes	48
Running diagnostics from the Rescue and Recovery workspace	48
PC-Doctor for Windows PE	49
Running diagnostics from the Rescue and Recovery workspace	49
Navigating through the diagnostics programs	49
Running tests	49
Test results	50
Fixed disk advanced test (FDAT)	50
Quick and Full erase - hard drive	52
Viewing the test log	52
Chapter 6. Using the Setup Utility	53
Starting the Setup Utility program	53
Viewing and changing settings	53
Exiting from the Setup Utility program	53
Using passwords	53
User Password	53
Administrator Password	54
Setting, changing, and deleting a password	54
Selecting a startup device	54
Selecting a temporary startup device	54
Changing the startup device sequence	54
Advanced settings	55
Chapter 7. Symptom-to-FRU Index	57
Hard disk drive boot error	57
Power Supply Errors	57
Diagnostic error codes	58
Beep symptoms	76
No-beep symptoms	78
POST error codes	78
Miscellaneous error messages	80
Undetermined problems	82
Chapter 8. FRU lists	85
Machine Type 6487	85
Machine Type 6488	96
Machine Type 8009	106
Machine Type 8010	116
Machine Type 8011	120
Machine Type 8012	129
Machine Type 8791	141
Machine Type 8792	151
Machine Type 8793	161
Machine Type 8794	171
Machine Type 8795	181
Machine Type 8796	190
Machine Type 8797	200
Machine Type 8798	209
Machine Type 8799	219
Machine Type 8800	231
Machine Type 8801	243
Machine Type 8802	254
Machine Type 8803	265
Machine Type 8804	277
Machine Type 8805	286
Machine Type 8806	296
Machine Type 8807	305
Machine Type 8808	318
Machine Type 8810	335
Machine Type 8811	349
Machine Type 9166	368
Machine Type 9167	372
Machine Type 9168	376
Chapter 9. Additional Service Information	381
Security features	381
Hardware controlled Passwords	381
Operating system password	381
Vital product data	381
BIOS levels	381
Flash update procedures	381
Updating (flashing) BIOS from a diskette or CD-ROM	382
Updating (flashing) BIOS from your operating system	382
Recovering from a POST/BIOS update failure	382
Power management	383
Automatic configuration and power interface (ACPI) BIOS	383
Automatic Power-On features	383
Recovering software using the Rescue and Recovery program	383
Appendix A. Notices	385
Television output notice	386

Match case Limit results 1 per page

Administrator Password

Setting an Administrator Password deters unauthorized persons from changing conﬁguration settings. If you

are responsible for maintaining the settings of several computers, you might want to set an Administrator

Password.

After you set an Administrator Password, a password prompt is displayed each time you try to access the

Setup Utility program.

If both the user and administrator passwords are set, you can type either password. However, to change

any conﬁguration settings, you must use your administrator password.

Setting, changing, and deleting a password

To set, change, or delete a password, do the following:

Note:

A password can be any combination of up to seven characters (A- Z, a-z, and 0-9)

Start the Setup Utility program (see “Starting the Setup Utility program” on page 47)

From the Setup Utility program menu, select

Security

Select

Set Passwords

. Read the information displayed on the right side of the screen.

Selecting a startup device

If the computer does not start up (boot) from a device such as the CD-ROM, diskette, or hard disk as

expected, use one of the following procedures to select a startup device.

Selecting a temporary startup device

Use this procedure to startup from any boot device.

Note:

Not all CDs, hard disks, and diskettes are startable (bootable)

If your computer is already on when you start this procedure, shut down the operating system and

turn off the computer.

To open the Startup Device Menu, repeatedly press the F12 key as you turn on the computer.

Note:

Selecting a startup device from this list does not permanently change the startup sequence; it is

valid for one boot cycle only.

Changing the startup device sequence

To view or permanently change the conﬁgured startup device sequence, do the following:

Start the Setup Utility program (see “Starting the Setup Utility program” on page 47)

Select

Startup

Select

Startup Sequence

. See the information displayed on the right side of the screen.

Select the devices for the Primary Startup Sequence, the Automatic Startup Sequence, and the Error

Startup Sequence.

Select

Exit

from the Setup Utility menu and then

Save Settings

Save and exit the Setup Utility

If you have changed these settings and want to return to the default settings, select

Load Default Settings

on the Exit menu.

Hardware Maintenance Manual