Dell OptiPlex 755 User Manual page 101

Key Combinations
<Ctrl><Alt><Del>
<F2> or <Ctrl><Alt><Enter>
<F3>
<F12> or <Ctrl><Alt><F8>
<Ctrl><p>
Controls and Lights
Power control
Power light
hard drive access light
Link light
Link integrity light (on integrated
network adapter)
Activity light (on integrated network
adapter)
Diagnostic lights
Standby power light
Power
DC power supply:
Wattage
® ®
in Microsoft Windows
®
window; in MS-DOS mode, restarts (reboots) the computer
starts embedded system setup (during system start-up only)
automatically starts the computer from the network environment
specified by the remote boot environment (PXE) rather than from
one of the devices in the system setup Boot Sequence option
(during system start-up only)
displays a boot device menu that allows the user to enter a device
for a single boot (during system start-up only) as well as options to
run hard drive and system diagnostics
displays the Management Engine BIOS Extension settings screen
that allows you to modify the settings
push button
green light — blinking green indicates a sleep mode; solid green
indicates a power-on state.
amber light — blinking amber indicates a problem with an
installed device; solid amber indicates an internal power problem
(See "Power Problems" on page 339.)
green
solid green light indicates network connection
green light for 10-Mb operation; orange light for 100-Mb
operation; yellow light for 1000-Mb (1-Gb) operation
yellow blinking light
four lights on the front panel (See "Diagnostic Lights" on
page 347.)
AUX_PWR on the system board
NOTE:
Power consumption from an AC power source can be zero
when the computer is unplugged from that power source, but the
internal battery does draw a minute amount of power from the power
supply even when the computer is not drawing power from the AC
power source.
280 W
XP , brings up the Windows Security
Desktop Computer Specifications
101