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22 Quick Reference Guide
www.dell.com | support.dell.com
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 23 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 23 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 26 for instructions
on diagnosing the beep code. Also, check
"Diagnostic Lights" on page 23 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 23 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 23 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
.
Power Light Problem Description Suggested Resolution