Dell OptiPlex 755 - Manual (Page 70)

70
Quick Reference 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. For example, beep code 1-3-1 (one possible beep code)
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.
Reseating the memory modules may correct the following beep code errors. If
the problem persists, contact Dell (see "Contacting Dell" in the User’s Guide)
for instructions on obtaining technical assistance.
Another failure has occurred. • Ensure that all hard drive and
optical drive cables are
properly connected to the
system board (see "System
Board Components" for your
system).
• If there is an error message on
the screen identifying a
problem with a device (such as
the floppy drive or hard drive),
check the device to make sure
it is functioning properly.
• If the operating system is
attempting to boot from a
device (such as the floppy
drive or optical drive), check
system setup (see "System
Setup" in the
User’s Guide) to
ensure the boot sequence is
correct for the devices
installed on your computer.
• If the problem persists,
contact Dell (see "Contacting
Dell" in the
User’s Guide).
Power Light Problem Description Suggested Resolution