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Quick Reference Guide 31
System Lights
Your power light may indicate a computer problem.
Power Light Problem Description Suggested Resolution
Solid green Power is on, and the computer is
operating normally.
No corrective action is required.
Blinking green The computer is in a power-saving
mode.
Press the power button, move the mouse, or
press a key on the keyboard to wake the
computer.
Blinks green several
times and then
turns off
A configuration error exists. Check "Diagnostic Lights" on page 32 to see if
the specific problem is identified.
Solid yellow The Dell Diagnostics is running a
test, or a device on the system board
may be faulty or incorrectly installed.
If the Dell Diagnostics is running, allow the
testing to complete.
Check "Diagnostic Lights" on page 32 to see if
the specific problem is identified.
If the computer does not boot, contact Dell
for technical assistance.
For information on
contacting Dell, see your online
User’s Guide
.
Blinking yellow A power supply or system board
failure has occurred.
Check "Diagnostic Lights" on page 32 to see if
the specific problem is identified. See "Power
Problems" in your online User’s Guide.
Solid green and a
beep code during
POST
A problem was detected while the
BIOS was executing.
See "Beep Codes" on page 35 for instructions
on diagnosing the beep code. Also, check
"Diagnostic Lights" on page 32 to see if the
specific problem is identified.
Solid green power
light, no beep code
and no video during
POST
The monitor or the graphics card
may be faulty or incorrectly installed.
Check "Diagnostic Lights" on page 32 to see if
the specific problem is identified.
Solid green power
light and no beep
code, but the
computer locks up
during POST
An integrated system board device
may be faulty.
Check "Diagnostic Lights" on page 32 to see if
the specific problem is identified. If the
problem is not identified, contact Dell for
technical assistance.
For information on
contacting Dell, see your online
User’s Guide
.