Dell 170L manual Beep Codes, If your computer beeps during start-up 1 Write down the beep code

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Light		Problem Description	Suggested Resolution
Pattern
	yellow	No memory modules are detected.	• Reinstall all memory modules and restart the
			computer.
	yellow
			• To eliminate the possibility of a faulty memory
	yellow
			connector, remove all memory modules, reinstall
	green
			one memory module (if the computer supports a
			single module), and then restart the computer. If
			the computer starts normally, move the memory
			module to a different connector and restart the
			computer. Continue until you have identified a
			faulty connector or reinstalled all modules without
			error.
	yellow	Memory modules are detected, but a	• Ensure that no special memory module/memory
		memory configuration or compatibility	connector placement requirements exist (see
	green
		error exists.	"Memory" in the online User’s Guide for more
	yellow
			information).
	green
			• Verify that the memory modules that you are
			installing are compatible with your computer.
			• If the problem persists, contact Dell.
	yellow	Another failure has occurred.	• Ensure that the cables are properly connected to
			the system board from all installed hard drives.
	green
			• Check the computer message that appears on your
	green
			monitor screen.
	green
			• If the problem persists, contact Dell.
	green	The computer is in a normal operating	• None.
		condition after POST.
	green
	green
	green

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Beep Codes

Your computer might emit a series of beeps during start-up if the monitor cannot display errors or problems. This series of beeps, called a beep code, identifies a problem. One possible beep code (code 1-3-1) consists of one beep, a burst of three beeps, and then one beep. This beep code tells you that the computer encountered a memory problem.

If your computer beeps during start-up:

1Write down the beep code.

2See "Dell Diagnostics" on page 17 to identify a more serious cause.

3Contact Dell for technical assistance.

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