Dell Comprehensive Guide on Beep Codes and Troubleshooting for Dimension E520

Advanced Troubleshooting: Dell Dimension E520 Service Manual
	compatibility error has	(see Memory).
	occurred.	If the problem persists, contact Dell (see "Contacting Dell" in your
		Owner's Manual).
	A possible expansion card	1. Determine if a conflict exists by removing an expansion card (not a
	failure has occurred.	graphics card) and restarting the computer (see Cards).
		2. If the problem persists, reinstall the card you removed, then remove a
		different card and restart the computer.
		3. Repeat this process for each card installed. If the computer starts
		normally, troubleshoot the last card removed from the computer for
		resource conflicts (see Resolving Software and Hardware
		Incompatibilities).
		4. If the problem persists, contact Dell (see "Contacting Dell" in your
		Owner's Manual).
	The system is operating	Press the power button
	in quick resume mode.	Move the mouse
		Press any key on the keyboard
		Press any key on the optional MCE remote control
	Another failure has	Ensure that all hard drive and CD/DVD drive cables are properly
	occurred.	connected to the system board (see Drives).
		If there is an error message on your screen identifying a problem with
		a device (such as the floppy drive or hard drive), check the device to
		make sure it is functioning properly.
		If the operating system is attempting to boot from a device (such as
		the floppy drive or hard drive), check system setup (see System
		Setup) to make sure the boot sequence is correct for the devices
		installed on your computer.
		If the problem persists, contact Dell (see "Contacting Dell" in your
		Owner's Manual).

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. For example, beep code 1-3-1 (one possible beep code) 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.

Reseating the memory modules (see Installing Memory) may correct the following beep code errors. If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.

Code Cause

1-3-1 through 2-4-4 Memory not being properly identified or used

4-3-1 Memory failure above address 0FFFFh

If you experience any of the following non-memory related beep code errors, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.

Code Cause

1-1-2 Microprocessor register failure

1-1-3 NVRAM

1-1-4 ROM BIOS checksum failure

1-2-1 Programmable interval timer 1-2-2 DMA initialization failure

1-2-3 DMA page register read/write failure

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