HP Z820 - Shutting down (2 Red Flashes)

[mrb1972]

Hi,

We have a HP Z820 Workstation that has started radomnly shutting down. When the shut down occurs we get 2 red flashes on the power LED but no beep code. Also we noticed there is a constant red led lit on the motherboard when this occurs.

Pulling the power for a few mins and reconnecting gets the system going again.

I couldnt find anything relating to 2 red flashed and no beep code in the manual, anyone any idea's what the problem could be, PSU perhaps?

Thanks

[DGroves]

the 2 red flashes usually indicate a thermal issue has forced a shutdown

i would check the cpu temps using the bios monitor or a windows based software monitor

next i would check the power supply (read the service manual for how to do this)

and then the case fans, and also any obstruction to airflow

[Z440Roger]

See page 149 in the Maintenance and Service Guide: http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-c03424977-1.pdf

Red Power LED blinking two times seems to be the CPU thermal protection that kicks in. More details and how to fix in the Maintenance and Service Guide abowe.

[mrb1972]

Thanks everyone, I did check the manual and the CPU Thermal protection error codes states there should also be beep codes, we are only getting the LED flash without the beeping so I wasnt sure if it was the same thing 

[MtothaJ]

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@mrb1972 wrote:

Thanks everyone, I did check the manual and the CPU Thermal protection error codes states there should also be beep codes, we are only getting the LED flash without the beeping so I wasnt sure if it was the same thing 

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Start by changng the thermal paste on the CPU (most likely it is dried and crumbly) and make sure the cooler is firmly seated.