Beep CodesYour 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, identifiesa 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 computerencountered a memory problem.Reseating the memory modules may fix the beep code errors in the following table. If the problem persists, see "Contacting Dell" in your Owner's Manual forinstructions on obtaining technical assistance.If you hear one of the following beep codes, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.configuration or compatibilityerror exists.l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtainingtechnical assistance.A possible expansion cardfailure has occurred.1. Determine if a conflict exists by removing a card and then restarting the computer.2. If the problem persists, reinstall the cards that you removed, remove a different card, and thenrestart the computer.3. Repeat this process for each card. If the computer starts normally, troubleshoot the last cardremoved from the computer for resource conflicts (see "Resolving Software and HardwareIncompatibilities" in your Owner's Manual).4. If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtainingtechnical assistance.Other failure has occurred. l Ensure that the cables are properly connected from the hard drive, CD drive, and DVD drive to thesystem board.l If there is an error message on your screen identifying a problem with a device (such as the floppydrive or hard drive), check the device to make sure it is functioning properly.l The operating system is attempting to boot from a device (such as the floppy drive or hard drive);check system setup to make sure the boot sequence is correct for the devices installed on yourcomputer.l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtainingtechnical assistance.The computer is in a normaloperating condition afterPOST.None.Code Cause1-3-1 through 2-4-4 Memory not being properly identified or used4-3-1 Memory failure above address 0FFFFhCode Cause1-1-2 Microprocessor register failure1-1-3 NVRAM1-1-4 ROM BIOS checksum failure1-2-1 Programmable interval timer1-2-2 DMA initialization failure1-2-3 DMA page register read/write failure3-1-1 Slave DMA register failure3-1-2 Master DMA register failure3-1-3 Master interrupt mask register failure3-1-4 Slave interrupt mask register failure3-2-2 Interrupt vector loading failure3-2-4 Keyboard Controller Test failure3-3-1 NVRAM power loss3-3-2 NVRAM configuration3-3-4 Video Memory Test failure