Dell OptiPlex GX300 User Guide - Page 61

Table 3. Diagnostic LED Codes, CAUTION: Before servicing any components inside your computer, see,

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The power indicator light-emitting diode (LED) and the hard-disk drive LED on the front of the computer emit diagnostic codes that can help you troubleshoot a system problem. Table 3 lists the codes for the diagnostic LEDs, probable causes, and suggested corrective actions. CAUTION: Before servicing any components inside your computer, see "Safety First-For You and Your Computer." Table 3. Diagnostic LED Codes Power LED Code Blinking yellow Blinking yellow Solid yellow Solid green and a beep code during POST Solid green power indicator and no beep code and no video during POST Solid green power indicator and no beep code but the system locks up during POST Hard-Disk Drive LED Code Blank Solid green N/A N/A N/A N/A Cause System power supply failure. Voltage regulator failure on the system board. A device on the system board may be faulty or is incorrectly installed. A problem was detected while the BIOS was executing. The monitor or the graphics card may be faulty. An integrated system board device may be faulty. Action See "Getting Help" for instructions on obtaining technical assistance. See "Getting Help" for instructions on obtaining technical assistance. Be sure that each microprocessor is properly seated, remove all expansion cards, and then reboot. If the system does not boot, see "Getting Help" for instructions on obtaining technical assistance. See Table 2 for instructions on diagnosing the beep code. See "Troubleshooting the Monitor." If the monitor is operating properly and is correctly connected, see "Getting Help" for instructions on obtaining technical assistance. See "Getting Help" for instructions on obtaining technical assistance. Back to Contents Page

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The power indicator light-emitting diode (LED) and the hard-disk drive LED on the front of the computer emit diagnostic codes that can help you
troubleshoot a system problem. Table 3 lists the codes for the diagnostic LEDs, probable causes, and suggested corrective actions.
Table 3. Diagnostic LED Codes
Back to Contents Page
CAUTION: Before servicing any components inside your computer, see "
Safety First
—
For You and Your Computer
."
Power LED Code
Hard-Disk Drive
LED Code
Cause
Action
Blinking yellow
Blank
System power supply
failure.
See "
Getting Help
" for instructions on
obtaining technical assistance.
Blinking yellow
Solid green
Voltage regulator failure
on the system board.
See "
Getting Help
" for instructions on
obtaining technical assistance.
Solid yellow
N/A
A device on the system
board may be faulty or
is incorrectly installed.
Be sure that each microprocessor is
properly seated,
remove all expansion
cards
, and then reboot. If the system does
not boot, see "
Getting Help
" for
instructions on obtaining technical
assistance.
Solid green
and a
beep code
during
POST
N/A
A problem was
detected while the BIOS
was executing.
See
Table 2
for instructions on diagnosing
the beep code.
Solid green power
indicator
and no
beep code and no
video
during POST
N/A
The monitor or the
graphics card may be
faulty.
See "
Troubleshooting the Monitor
." If the
monitor is operating properly and is
correctly connected, see "
Getting Help
" for
instructions on obtaining technical
assistance.
Solid green power
indicator
and no
beep code but the
system locks up
during POST
N/A
An integrated system
board device may be
faulty.
See "
Getting Help
" for instructions on
obtaining technical assistance.