User Guide

Diagnostics  79
Beep codes
Your computer may emit a series of beeps during start-up if there are errors
or problems. This series of beeps, called a beep code, identifies a problem. If
this occurs, note the beep code and contact Dell for assistance.
NOTE: Some of the beep codes mentioned in the table below may not
apply to your computer.
Beep Codes Possible Problem
One Possible system board failure — BIOS ROM checksum
failure
Two No RAM detected
NOTE: If you installed or replaced the memory module,
ensure that the memory module is seated properly.
Three Possible system board failure — Chipset error
Four RAM read/write failure
Five Real-Time Clock failure
Six Video card or video controller failure
Seven Processor failure
NOTE: This beep code is supported for computers with
Intel processor only.
Eight Display failure