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22 Quick Reference Guide
www.dell.com | support.dell.com
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.
2
See "Dell Diagnostics" on page 17 to identify a more serious cause.
3
Contact Dell for technical assistance.
yellow
yellow
yellow
green
No memory modules are detected.
• Reinstall all memory modules and restart the
computer.
• 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.
yellow
green
yellow
green
Memory modules are detected, but a
memory configuration or compatibility
error exists.
• Ensure that no special memory module/memory
connector placement requirements exist (see
"Memory" in the online
User’s Guide
for more
information).
• Verify that the memory modules that you are
installing are compatible with your computer.
• If the problem persists, contact Dell.
yellow
green
green
green
Another failure has occurred.
• Ensure that the cables are properly connected to
the system board from all installed hard drives.
• Check the computer message that appears on your
monitor screen.
• If the problem persists, contact Dell.
green
green
green
green
The computer is in a normal operating
condition after POST.
• None.
Light
Pattern
Problem Description Suggested Resolution
X6741bk0.book Page 22 Wednesday, September 22, 2004 1:55 PM