Solving problems, Beep codes – Dell OptiPlex SX270N User Manual
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Solving Problems
Dell™ OptiPlex™ SX270 Systems User's Guide
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:
1.
Write down the beep code on the
Diagnostics Checklist
.
2.
Run the
Dell Diagnostics
to identify a more serious cause.
3.
Contact Dell
for technical assistance.
E-Mail, Modem, and Internet Problems
Serial or Parallel Device Problems
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 Memory 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
4-2-1
No time tick
4-2-2
Shutdown failure
4-2-3
Gate A20 failure
4-2-4
Unexpected interrupt in protected mode
4-3-1
Memory failure above address 0FFFFh
4-3-3
Timer-chip counter 2 failure
4-3-4
Time-of-day clock stopped
4-4-1
Serial or parallel port test failure
4-4-2
Failure to decompress code to shadowed memory
4-4-3
Math-coprocessor test failure
4-4-4
Cache test failure