228 Advanced Troubleshooting
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Beep Codes
Your computer might emit a series of beeps that identify a problem. One possible series
(code 1-3-1) consists of one beep, a burst of three beeps, and then one beep. This series tells
you that the computer encountered a memory problem.
1 Write the beep code down on the Diagnostic Checklist.
2 Run the Dell Diagnostics to identify a more serious cause.
3 Contact Dell for 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
1-3 Video Memory Test failure
1-3-1 through
2-4-4
DIMMs not being properly identified
or used
3-1-1 Slave DMA register failure
3-1-2 Master DMA register failure
3-1-3 Master interrupt mask register failure
3-1-4 Slave interrupt mask register failure
3-2-2 Interrupt vector loading failure
3-2-4 Keyboard Controller Test failure
3-3-1 NVRAM power loss
3-3-2 NVRAM configuration
3-3-4 Video Memory Test failure
3-4-1 Screen initialization failure
3-4-2 Screen retrace failure
3-4-3 Search for video ROM failure
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