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Lenovo ThinkCentre M50 Hardware Maintenance Manual (HMM) - Page 119

Erasing, forgotten, password, clearing, Flash, update, procedures, Updating, flashing, diskette, CD- - desktop pc

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Erasing a lost or forgotten password (clearing CMOS) This section applies to lost or forgotten passwords. For more information about lost or forgotten passwords, see Access IBM on your desktop. Note: Some models have a POV daughter card installed on the system board. In these models, the password is stored in the EEPROM on the POV card and cannot be erased. See "Identifying parts on the system board (all machine types)" on page 38 for the location of the POV card. To erase a forgotten password: 1. Turn off the computer and all attached devices. 2. Remove the cover. See "Removing the cover" on page 30. 3. Locate the Clear CMOS/Recovery jumper on the system board. See "Identifying parts on the system board (all machine types)" on page 38. 4. If necessary, see "Replacing adapters" on page 39 to remove any adapters that impede access to the Clear CMOS/Recovery jumper. 5. Move the jumper from the standard position (pins 1 and 2) to the maintenance or configure position (pins 2 and 3). 6. Replace the cover and connect the power cord. See "Replacing the cover and connecting the cables" on page 63. 7. Restart the computer, leave it on for approximately 10 seconds. Turn off the computer by holding the power switch for approximately 5 seconds. The computer will turn off. 8. Repeat steps 2 through 4 on page 113.. 9. Move the jumper back to the standard (pins 1 and 2). 10. Replace the cover and connect the power cord. See "Replacing the cover and connecting the cables" on page 63. Flash update procedures This section details how to flash (update) the BIOS. Flash updates are available at http://www.ibm.com/pc/support// on the World Wide Web. Updating (flashing) BIOS from a diskette or CD-ROM 1. Shut down the operating system and turn off the computer. 2. Insert the flash update diskette or CD-ROM. 3. Turn on the computer. The update begins. Updating (flashing) BIOS from your operating system Note: Due to constant improvements being made to the IBM Web site, Web page content (including the links referenced in the following procedure) is subject to change. 1. From your browser, type http://www.ibm.com/pc/support// in the address field and press Enter. 2. Locate the Downloadable files for your machine type. 3. Under Select your product, choose your machine type and click Go. 4. In Downloadable file by category, click BIOS. 5. Under Download files - BIOS by date, click your machine type. Chapter 8. Additional Service Information 113

Section	Page
Contents	5
Chapter 1. About this manual	7
Important Safety Information	7
Chapter 2. General information	9
Features	9
Physical specifications	11
Types 8185, 8186, 8192, 8413, and 8430	12
Types 8128, 8187, 8188, 8193, 8414, and 8431	13
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	14
Types 8196 and 8197	15
Chapter 3. General Checkout	17
Chapter 4. IBM Enhanced Diagnostics	21
Diagnostics program download	21
Navigating through the diagnostics programs	21
Running diagnostics tests	21
Test selection	22
Test results	22
Fixed disk advanced test (FDAT)	22
Quick and Full erase - hard drive	24
Viewing the test log	24
Chapter 5. IBM Setup Utility program	25
Starting the IBM Setup Utility program	25
Viewing and changing settings	25
Exiting from the IBM Setup Utility program	26
Using passwords	26
User password	26
Administrator password	26
Setting, changing, and deleting a password	26
Using Security Profile by Device	27
Using IDE Drives Setup	27
Selecting a startup device	28
Selecting a temporary startup device	28
Changing the startup device sequence	28
Chapter 6. Replacing FRUs	29
Locating connectors on the front	29
Types 8185, 8186, 8192, 8413, and 8430	29
Types 8128, 8187, 8188, 8193, 8414, and 8431	29
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	31
Types 8196 and 8197	31
Locating the connectors on the rear	33
Types 8185, 8186, 8192, 8413, and 8430	33
Types 8128, 8187, 8188, 8193, 8414, and 8431	33
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	35
Types 8196 and 8197	35
Removing the cover	36
Types 8185, 8186, 8192, 8413, and 8430	36
Types 8128, 8187, 8188, 8193, 8414, and 8431	37
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	37
Types 8196 and 8197	38
Locating components	40
Types 8185, 8186, 8192, 8413, and 8430	40
Types 8128, 8187, 8188, 8193, 8414, and 8431	41
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	42
Types 8196 and 8197	43
Identifying parts on the system board (all machine types)	44
Replacing memory (all machine types)	44
Replacing adapters	45
Types 8185, 8186, 8192, 8413, and 8430	45
Types 8128, 8187, 8188, 8193, 8414, and 8431	47
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	48
Types 8196 and 8197	48
Replacing internal drives	49
Types 8185, 8186, 8192, 8413, and 8430	49
Drive bay information	49
Removing a drive	50
Installing a drive	51
Types 8128, 8187, 8188, 8193, 8414, and 8431	51
Drive bay information	51
Removing a drive	52
Installing a drive	53
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	54
Drive bay information	54
Removing the drive	54
Installing a drive	55
Types 8196 and 8197	57
Drive bay information	57
Removing a drive	57
Installing a drive	59
Connecting the drive	60
Parallel ATA hard disk drive	60
Serial ATA hard disk drive	61
CD drive, DVD drive, CD/RW drive, or DVD/CD/RW combo drive	61
Diskette drive	61
Replacing the battery (all machine types)	62
Replacing the power supply	63
Types 8185, 8186, 8192, 8413, and 8430	63
Types 8128, 8187, 8188, 8193, 8414, and 8431	63
Types 8189, 8190, 8194, 8195, 8196, 8197, 8415, 8432, and 8433	64
Replacing a microprocessor (all machine types)	65
Replacing the system board (all machine types)	67
Replacing the cover and connecting the cables	69
Types 8185, 8186, 8192, 8413, and 8430	69
Types 8128, 8187, 8188, 8193, 8414, and 8431	70
Types 8189, 8190, 8194, 8195, 8415, 8432, and 8433	71
Types 8196 and 8197	72
Chapter 7. Symptom-to-FRU Index	75
Hard disk drive boot error	75
Power Supply Errors	76
Diagnostic error codes	76
Beep symptoms	95
No-beep symptoms	97
POST error codes	98
Miscellaneous error messages	113
Undetermined problems	115
Power supply connectors	116
Connector P1	116
Connector P2, P3, P4, and P7	116
Connector P5 (Diskette drive)	116
Connector P6	116
Connector P8 (Serial ATA)	116
Chapter 8. Additional Service Information	117
Security features	117
Passwords	117
Power-on password	117
Removing a power-on password	117
Administrator password	117
Administrator password control	118
Operating system password	118
Vital product data	118
BIOS levels	118
Erasing a lost or forgotten password (clearing CMOS)	119
Flash update procedures	119
Updating (flashing) BIOS from a diskette or CD-ROM	119
Updating (flashing) BIOS from your operating system	119
Recovering from a POST/BIOS update failure	120
Power management	121
Automatic configuration and power interface (ACPI) BIOS	121
Advanced Power Management	121
Automatic Hardware Power Management features	121
Setting Automatic Hardware Power Management features	121
Automatic Power-On features	122
Product Recovery Program	123
Chapter 9. Parts listing	125
Type 8128	125
Type 8185	127
Type 8186	136
Type 8187	140
Type 8188	155
Type 8189	164
Type 8190	178
Type 8192	184
Type 8193	186
Type 8194	194
Type 8195	208
Type 8196	217
Type 8197	221
Type 8413	224
Type 8414	229
Type 8415	235
Type 8430	238
Type 8431	242
Type 8432	247
Type 8433	250
Chapter 10. Related service information	253
Safety information	253
General safety	253
Electrical safety	254
Safety inspection guide	255
Handling electrostatic discharge-sensitive devices	256
Grounding requirements	257
Safety notices (multi-lingual translations)	257
Send us your comments!	286
Problem determination tips	287
Notices	287

Match case Limit results 1 per page

Erasing

lost

forgotten

password

(clearing

CMOS)

This

section

applies

lost

forgotten

passwords.

For

information

about

lost

forgotten

passwords,

see

Access

IBM

your

desktop.

Note:

Some

models

have

POV

daughter

card

installed

the

system

board.

these

models,

the

password

stored

the

EEPROM

the

POV

card

and

cannot

erased.

See

“Identifying

parts

the

system

board

(all

machine

types)”

page

for

the

location

the

POV

card.

erase

forgotten

password:

Turn

off

the

computer

and

all

attached

devices.

Remove

the

cover.

See

“Removing

the

cover”

page

30.

Locate

the

Clear

CMOS/Recovery

jumper

the

system

board.

See

“Identifying

parts

the

system

board

(all

machine

types)”

page

38.

necessary,

see

“Replacing

adapters”

page

remove

any

adapters

that

impede

access

the

Clear

CMOS/Recovery

jumper.

Move

the

jumper

from

the

standard

position

(pins

and

the

maintenance

configure

position

(pins

and

3).

Replace

the

cover

and

connect

the

power

cord.

See

“Replacing

the

cover

and

connecting

the

cables”

page

63.

Restart

the

computer,

leave

for

approximately

seconds.

Turn

off

the

computer

holding

the

power

switch

for

approximately

seconds.

The

computer

will

turn

off.

Repeat

steps

through

page

113..

Move

the

jumper

back

the

standard

(pins

and

2).

10.

Replace

the

cover

and

connect

the

power

cord.

See

“Replacing

the

cover

and

connecting

the

cables”

page

63.

Flash

update

procedures

This

section

details

how

flash

(update)

the

BIOS.

Flash

updates

are

available

http://www.ibm.com/pc/support//

the

World

Wide

Web.

Updating

(flashing)

BIOS

from

diskette

CD-ROM

Shut

down

the

operating

system

and

turn

off

the

computer.

Insert

the

flash

update

diskette

CD-ROM.

Turn

the

computer.

The

update

begins.

Updating

(flashing)

BIOS

from

your

operating

system

Note:

Due

constant

improvements

being

made

the

IBM

Web

site,

Web

page

content

(including

the

links

referenced

the

following

procedure)

subject

change.

From

your

browser,

type

http://www.ibm.com/pc/support//

the

address

field

and

press

Enter.

Locate

the

Downloadable

files

for

your

machine

type.

Under

Select

your

product,

choose

your

machine

type

and

click

Downloadable

file

category,

click

BIOS

Under

Download

files

BIOS

date,

click

your

machine

type.

Chapter

Additional

Service

Information

113