Lenovo ThinkPad E550 (English) Hardware Maintenance Manual - ThinkPad E550, E5 - Page 47

Power-on password, Hard disk password, Supervisor password, How to remove the power-on password

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Page 47 highlights

Power-on password A power-on password protects the system from being turned on by an unauthorized person. The password must be entered before the operating system can be started. For instructions on how to remove the power-on password, see "How to remove the power-on password" on page 41. Hard disk password There are two hard disk passwords: • User hard disk password - for the user • Master hard disk password - for the system administrator, who can use it to get access to the hard disk even if the user has changed the user hard disk password. Note: There are two modes for the hard disk password: User only and Master + User. The Master + User mode requires two hard disk passwords; the system administrator enters both in the same operation. The system administrator then provides the user hard disk password to the system user. Attention: If the user hard disk password has been forgotten, check whether a master hard disk password has been set. If a master hard disk password has been set, it can be used to access the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user hard disk password or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee. For instructions on how to remove the hard disk password, see "How to remove the hard disk password" on page 42. Supervisor password A supervisor password protects the system information stored in the ThinkPad Setup program. The user must enter the supervisor password in order to get access to the ThinkPad Setup program and change the system configuration. Attention: If the supervisor password has been forgotten and cannot be made available to the service technician, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee. How to remove the power-on password To remove the power-on password, do one of the following: If no supervisor password has been set, do the following to remove the power-on password: 1. Turn off the computer. 2. Remove the battery pack. For instructions on how to remove the battery pack, see "1020 Battery pack" on page 66. 3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see "1090 Coin-cell battery" on page 73. 4. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt will not be displayed. The power-on password has been removed. 5. Reinstall the coin-cell battery and the battery pack. If a supervisor password has been set and is known to the service technician, do the following to remove the power-on password: 1. Turn on the computer. 2. When the ThinkPad logo is displayed, immediately press F1. Chapter 4. Related service information 41

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Power-on password
A power-on password protects the system from being turned on by an unauthorized person. The password
must be entered before the operating system can be started. For instructions on how to remove the
power-on password, see “How to remove the power-on password” on page 41.
Hard disk password
There are two hard disk passwords:
• User hard disk password - for the user
• Master hard disk password - for the system administrator, who can use it to get access to the hard disk
even if the user has changed the user hard disk password.
Note:
There are two modes for the hard disk password:
Useronly
and
Master+User
. The
Master+User
mode requires two hard disk passwords; the system administrator enters both in the same operation. The
system administrator then provides the user hard disk password to the system user.
Attention:
If the user hard disk password has been forgotten, check whether a master hard disk password
has been set. If a master hard disk password has been set, it can be used to access the hard disk drive. If
nomasterharddiskpasswordisavailable,neitherLenovonorLenovoauthorizedservicetechniciansprovide
anyservicestoreseteithertheuserharddiskpasswordorthemasterharddiskpassword,ortorecoverdata
from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.
For instructions on how to remove the hard disk password, see “How to remove the hard disk password”
on page 42.
Supervisor password
A supervisor password protects the system information stored in the ThinkPad Setup program. The user
must enter the supervisor password in order to get access to the ThinkPad Setup program and change the
system configuration.
Attention:
If the supervisor password has been forgotten and cannot be made available to the service
technician, there is no service procedure to reset the password. The system board must be replaced for
a scheduled fee.
How to remove the power-on password
To remove the power-on password, do one of the following:
If no supervisor password has been set, do the following to remove the power-on password:
1. Turn off the computer.
2. Remove the battery pack. For instructions on how to remove the battery pack, see “1020 Battery
pack” on page 66.
3. Remove the coin-cell battery. For instructions on how to remove the coin-cell battery, see “1090
Coin-cell battery” on page 73.
4. Turn on the computer and wait until the POST ends. After the POST ends, the password prompt will not
be displayed. The power-on password has been removed.
5. Reinstall the coin-cell battery and the battery pack.
If a supervisor password has been set and is known to the service technician, do the following to remove
the power-on password:
1. Turn on the computer.
2. When the ThinkPad logo is displayed, immediately press F1.
Chapter 4
.
Related service information
41