POST Error Messages

Diagnostic Front Panel LEDs and Audible Codes (Continued)

 

 

Possible

 

 

Activity

Beeps

Cause

Recommended Action

 

 

 

 

 

Red Power LED

None

Processor

1.

Ensure that the computer air vents

flashes two times,

 

thermal

 

are not blocked and the processor

once every second,

 

protection

 

cooling fan is running. Leave a

followed by a

 

activated:

 

4-inch (10.2-cm) clearance at the

two-second pause.

 

A fan may be

 

back of the system unit and above

The Power LED will

 

blocked or not

 

the monitor to permit the required

continue flashing

 

turning.

 

airflow.

until the problem is

 

OR

2.

Open hood, press power button,

resolved.

 

 

The

 

and see if the processor fan spins. If

 

 

 

 

 

 

the processor fan is not spinning,

 

 

heatsink/fan

 

 

 

 

make sure the fan's cable is

 

 

assembly is

 

 

 

 

plugged onto the system board

 

 

not properly

 

 

 

 

header. Ensure the fan is

 

 

attached to

 

 

 

 

fully/properly seated or installed.

 

 

the processor.

 

 

 

3. If fan is plugged in and seated

 

 

 

 

 

 

 

properly, but is not spinning, then

 

 

 

 

replace processor fan.

 

 

 

4.

Reseat processor heatsink and

 

 

 

 

verify that the fan assembly is

 

 

 

 

properly attached.

 

 

 

5. Contact an authorized reseller or

 

 

 

 

service provider.

 

 

 

 

 

Red Power LED

None

Processor not

1.

Check to see that the processor is

flashes three times,

 

installed (not

 

present.

once every second,

 

an indicator of

2.

Reseat the processor.

followed by a

 

bad

 

 

 

two-second pause.

 

processor).

 

 

The Power LED will

 

 

 

 

continue flashing until the problem is resolved.

A–6

www.hp.com

Troubleshooting Guide

Page 70
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HP dx5150 manual Diagnostic Front Panel LEDs and Audible Codes

dx5150 specifications

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