Dell OptiPlex 755, Quick Reference Manual

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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