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5. Select Hard-disk x password, where x is the letter of the hard disk drive. A pop-up window opens.
6. Select Master HDP.
7. Type the current master hard-disk password in the Enter Current Password eld. Then leave the Enter
New Password eld blank, and press Enter twice.
8. Press Fn+F10 to save changes and exit the ThinkPad Setup program.
9. Select Yes in the Setup Notice window. Both the user hard-disk password and master hard-disk
password will be removed.
Power management
There are several power-saving modes, such as sleep mode, hibernation mode, and wireless off mode.
These power-saving modes enable the users to conserve power at any time.
Sleep mode
When the computer enters sleep mode, the following events occur:
• The LCD is powered off.
• The hard disk drive is powered off.
• The microprocessor stops.
In certain circumstances, the computer goes into sleep mode automatically:
• After a period of inactivity specied in power plan settings
• When the battery indicator blinks orange, indicating that the battery power is low
To return from sleep mode, do one of the following:
• Press the Fn key.
• Open the LCD cover.
• Press the power button.
Also, in either of the following events, the computer automatically returns from sleep mode and resumes
operation:
• The ring indicator (RI) is signaled by a serial device or a PC Card device.
• The time set on the resume timer elapses.
Note: The computer does not accept any input immediately after it enters sleep mode. Wait a few
seconds before taking any action to reenter operation mode.
Hibernation mode
In hibernation mode, the following events occur:
• The system status, RAM, VRAM, and setup data are stored on the hard disk.
• The system is powered off.
If you have dened one of the following actions as the event that causes the system to go into hibernation
mode, perform that action.
• Closing the lid.
• Pressing the power button.
Also, the computer goes into hibernation mode automatically after a period of inactivity specied in power
plan settings.
Chapter 4. Related service information 35