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Table
10-1
Numeric
Codes
and
Text
Messages
(continued)
Control
panel
message
Description
Recommended
action
The
machine
cover
has
been
removed
since
last
system
startup.
Please
ensure
that
any
system
access
was
authorized.
Press
<F2>
to
continue.
Hard
disk
failure
is
imminent.
Please
back
up
your
hard
disk
and
have
it
replaced!
Press
<F10>
for
Setup,
<F2>
to
continue.
Warning:
Changing
setup
options
while
Computer
cover
was
removed
since
last
system
startup.
Hard
drive
is
about
to
fail.
Warning
message.
On
some
models
no
action
is
required.
On
other
models
you
must
clear
the
warning
message
in
the
Computer
Setup
utility.
To
do
so,
restart
the
computer
and
press
F10
before
the
computer
boots
to
the
operating
system
to
enter
the
Computer
Setup
utility.
In
the
PC
Health
menu,
open
the
Chassis
Opened
Warning
item
and
select
Clear
.
Save
your
changes
and
exit
the
Computer
Setup
utility.
Back
up
data
on
the
hard
drive
and
replace
the
drive.
No
recommended
action.
resuming
from
Hibernate
may
cause
your
system
to
fail
to
resume.
Interpreting
POST
Diagnostic
Audible
Codes
This
section
covers
the
audible
codes
that
may
occur
before
or
during
POST
that
do
not
necessarily
have
a
text
message
associated
with
them.
WARNING!
When
the
computer
is
plugged
into
an
AC
power
source,
voltage
is
always
applied
to
the
system
board.
To
reduce
the
risk
of
personal
injury
from
electrical
shock
and/or
hot
surfaces,
be
sure
to
disconnect
the
power
cord
from
the
wall
outlet
and
allow
the
internal
system
components
to
cool
before
touching.
NOTE:
Recommended
actions
in
the
following
table
are
listed
in
the
order
in
which
they
should
be
performed.
Not
all
audible
codes
are
available
on
all
models.
Table
10-2
Diagnostic
Audible
Codes
Beep
Definition
Possible
Cause
Recommended
Action
1
short
beep
and
1
long
beep
followed
by
long
pause
84
Bad
memory
or
memory
configuration
error.
CAUTION:
To
avoid
damage
to
the
DIMMs
or
the
system
board,
you
must
unplug
the
computer
power
cord
before
attempting
to
reseat,
install,
or
remove
a
DIMM
module.
1.
Reseat
DIMMs.
2.
Ensure
that
the
DIMMs
are
installed
in
the
correct
memory
sockets.
3.
Replace
DIMMs
one
at
a
time
to
isolate
the
faulty
module.
4.
Replace
third-party
memory
with
HP
memory.
5.
Replace
the
system
board.