Dell Precision 470 - Manual (Page 29)

Quick Reference Guide
29
Error Messages
NOTE:
If the message is not listed, see the documentation for either the operating system or the program
that was running when the message appeared.
If an error occurs during start-up, a message may be displayed on the monitor identifying the
problem. See "Error Messages" in your User’s Guide for suggestions on resolving any problems.
Diagnostic Lights
CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions
located in the Product Information Guide.
To help you troubleshoot a problem, your computer has four lights labeled "A," "B," "C," and "D" on
the front panel. The lights can be yellow, green, or off. When the computer starts normally, the
lights flash. After the computer starts, all four lights display solid green. If the computer
malfunctions, the color and sequence of the lights identify the problem.