Dell precision workstation Diagnostic Lights, Error Messages, Diagnostic Light Codes Before Post

Code	Cause
4-4-3	Math-coprocessor test failure
4-4-4	Cache test failure

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 the 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 in the Product Information Guide.

To help you troubleshoot a problem, your computer has four lights labeled "1," "2," "3," and "4" on the front. The lights can be "off" or green. When the computer starts normally, the lights flash. If the computer malfunctions, the pattern of the lights and also that of the power button help to identify the problem. These lights also indicate sleep states.

Diagnostic Light Codes Before POST

Diagnostic Lights	Power	Problem Description	Suggested Resolution
	Light
	off	No electrical power is	Connect the computer to an electrical outlet.
		supplied to the computer.	Ensure that the front-panel power light is on. If
			the power light is off, ensure that the computer
			is connected to a working electrical outlet and
			then press the power button.
			If the problem is still not resolved, contact Dell
			for technical assistance.
	off	The computer is in a normal	Press the power button to turn the computer
		off condition; the computer is	on.
		connected to an electrical	If the computer does not turn on, ensure that
		outlet.
			the front-panel power light is on. If the power
			light is off, ensure that the computer is
			connected to a working electrical outlet and
			then press the power button.
			If the problem is still not resolved, contact Dell
			for technical assistance.

Quick Reference Guide

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