Compaq Armada M300 Series Reference Manual page 142

Problems and Solutions
Problem
The NIC loses connection
(Loss of Link).
The computer will not
power on when a wake-up
packet is sent.
Continued
Possible Cause
The connection from the
LAN cable to the network is
loose or disconnected.
A wake-up packet was
previously received by the
computer.
If you are connected to a
hub or switch, the link LED
on the back of the adapter
is off.
If the link LED does not
come on when the
computer is turned on, a
link is not established with
the hub or switch.
Solution
Disconnect, then reconnect,
the LAN cable. Reestablish
the network connection.
The reception of a wake-up
packet will set the adapter
to a special state. This
condition must be reset
before the adapter will
accept another wake-up
packet and turn on the
computer.
Check the computer's BIOS
for power settings.
The link LED on the back of
the adapter should be on,
even though the computer
power is off. Try turning
the computer on. If the LED
now lights, the adapter is
not receiving power in
standby mode.
Check the cabling or
substitute it with a cable
that has been verified to
work correctly.
Make sure the hub or
switch is either 10BaseT or
100BaseTX and is turned
on and fully functional.
Check with your local
Compaq authorized service
provider for an updated
BIOS.
Troubleshooting 15-13