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.
A possible USB failure has
occurred.
l Reinstall all USB devices, check cable connections, and then restart the computer.
No memory modules are
detected.
l Reinstall all memory modules and restart the computer.
l To eliminate the possibility of a faulty memory connector, remove all memory modules, reinstall 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.
Memory modules are
detected, but a memory
configuration or compatibility
error exists.
l Ensure that no special memory module/memory connector placement requirements exist (see
"Memory" for more information).
l Verify that the memory modules that you are installing are compatible with your computer.
l If the problem persists, contact Dell.
Another failure has
occurred.
l Ensure that the cables are properly connected to the system board from all installed hard drives.
l Check the computer message that appears on your monitor screen.
l If the problem persists, contact Dell.
The computer is in a normal
operating condition after
POST.
Processor register failure
ROM BIOS checksum failure
Programmable interval timer failure
DMA initialization failure
DMA page register read/write failure
Memory not being properly identified or used
Slave DMA register failure
Master DMA register failure
Master interrupt mask register failure
Slave interrupt mask register failure
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