Dell Precision 220 - Manual (Page 76)

Diskette-Drive Access Indicator
The diskette-drive access indicator lights up when the drive is reading data from or writing data to a diskette. Wait until the access indicator turns
off before removing a diskette from the drive.
Power Button
The power button controls the system's AC input power. See the following table for power button functions on computers running Windows 98,
Windows NT, or Windows 2000.
If the system does not turn off when you press the power button, the system may be hung. Press and hold the power button until the system turns off
completely (this process may take several seconds). Alternatively, press the reset button to reset the system and reboot. If the system is hung and
both buttons fail to function properly, unplug the AC power cable from the computer, wait for it to completely stop running, plug in the AC power
cable, and if it the system does not restart, press the power button to restart the system.
Power Indicator
The power indicator on the front of the computer has a light-emitting diode (LED) that can illuminate in two different colors and can blink or remain
solid to indicate several different states. See "
Diagnostic LEDs " for a description of each of these states.
Reset Button
The reset button allows you to reboot (restart) your system without having to turn the power off and then on again. Rebooting the system in this
manner reduces stress on system components. However, be sure that you have saved and closed all open files and application programs (if
possible) to avoid losing any data. Then perform an orderly shutdown of the operating system (see your operating system documentation for
instructions).
Hard-Disk Drive Access Indicator
The hard-disk drive access indicator lights up when a hard-disk drive or CD-ROM drive is reading data from or writing data to the drive.
Cover Release Button
On the back of the chassis, slide the upper half of the padlock ring to the left. Then press the cover release button to remove the computer cover.
1 Reset button
2 Power button
3 Power indicator
4 Diskette drive access indicator
5 Hard-disk drive access indicator
Computer Status Power Button Function
Off Press and release to turn the computer on.
On Press and hold for more than 6 seconds to immediately turn the computer off.
NOTE: Use this method only if the computer will not shut down normally.
On (Windows NT) Press and release to attempt an orderly shutdown.
NOTE: This works only if the Dell system utilities are loaded on the computer. Without the utilities, the
computer immediately turns off rather than performs an orderly shut down.
On (Windows 2000) Press and release to put the computer in the sleep state.
NOTE: This works depending on how Windows 2000 is configured.
Sleep state
(Windows 2000) Press and release to bring the computer out of the sleep state.