POST Error Messages

Diagnostic Front Panel LEDs and Audible Codes (Continued)

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

 

Red Power LED

2

Processor thermal

1.

Ensure that the computer air vents

flashes two times,

 

protection

 

are not blocked and the processor

once every second,

 

activated:

 

cooling fan is running.

followed by a two

 

A fan may be

2.

Open hood, press power button,

second pause.

 

blocked or not

 

and see if the processor fan spins. If

 

 

turning.

 

the processor fan is not spinning,

 

 

OR

 

make sure the fan's cable is

 

 

The heatsink/fan

 

plugged onto the system board

 

 

 

header. Ensure the fan is

 

 

assembly is not

 

 

 

 

fully/properly seated or installed.

 

 

properly attached

 

 

 

3.

If fan is plugged in and seated

 

 

to the processor.

 

 

 

 

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

3

Processor not

1.

Check to see that the processor is

flashes three times,

 

installed (not an

 

present.

once every second,

 

indicator of bad

2.

Reseat the processor.

followed by a two

 

processor).

 

 

 

second pause.

Troubleshooting Guide

www.hp.com

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HP DC5100 manual Diagnostic Front Panel LEDs and Audible Codes

DC5100 specifications

The HP DC5100 is a desktop computer that was launched by Hewlett-Packard in the mid-2000s, primarily targeting the business sector and home office users. Its design emphasizes robustness, reliability, and ease of use, which has made it a popular choice among small to medium-sized businesses.

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