Dell OptiPlex SX280 - Manual (Page 15)

1. Enter system setup .
2. Type the admin password at the prompt.
3. Highlight Admin Password and press the left- or right-arrow key to delete the existing admin password.
The setting changes to Not Set.
To assign a new admin password, perform the steps in " Assigning a System Password ."
4. Exit system setup.
Disabling a Forgotten Password and Setting a New Password
To reset system and/or admin passwords, see " Clearing Forgotten Passwords ."
Power Management
Your computer can be set to use less power when you are not working. You control the power usage through the operating system installed on your computer
and certain option settings in system setup. These periods of reduced power are called "sleep states":
l Standby. In this sleep state, power is reduced or turned off for most components, including the cooling fans. However, system memory remains active.
This state is not supported by Windows NT 4.0.
l Hibernate. This sleep state reduces power consumption to a minimum by writing all data in system memory to a hard drive and then removing system
power. Waking up from this state restarts the computer, and the memory contents are restored. Operation then resumes where the computer left off
when it entered the hibernation state.
This state is not supported by Windows NT 4.0.
l Shutdown. This sleep state removes all power from the computer except a small auxiliary amount. As long as the computer remains connected to an
electrical outlet, it can be automatically or remotely started. For example, the Auto Power On option in system setup allows the computer to
automatically start at a specified time. Also, your network administrator can remotely start your computer using a power management event such as
Remote Wake Up.
The following table lists the sleep states and the methods you can use to wake the computer from each state.
NOTE: All components installed in the computer must support this feature and have the appropriate drivers loaded to enter standby. For more
information, see the manufacturer's documentation for each component.
NOTE: All components installed in the computer must support this feature and have the appropriate drivers loaded to enter hibernation. For more
information, see the manufacturer's documentation for each component.
Sleep State Wake-Up Methods (Windows XP)
Standby l Press the power button
l Auto power on
l USB device activity (excluding USB mouse or keyboard activity)
l Power management event
Hibernate l Press the power button
l Auto power on
l Power management event
Shutdown l Press the power button
l Auto power on
l Power management event
NOTE: For more information on power management, see your operating system documentation.