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09-27-2018 08:03 AM
Hello everybody! When I start my Z400 workstation it beeps two times and blinkes red two times. According to the manual it meens that a thermal shutdown has occurred (at the same time, the beep-flash cycle must be repeated five times as I understand). I've checked all coolers on other systmes (all are in good condition) and tried to replace each of them. But the problem remains. Any ideas? Thanks for spending your time on my problem 🙂
09-29-2018 02:11 AM
Disconnect the AC power.
If a laptop, and if you can, remove the battery.
Hold-down the ON/OFF button for ten seconds, to "drain" any residual electricity.
Use a pencil to tap a fan-blade, to see if the fan spins freely.
Check that the wires from the fan are securely connected to some "header" on the motherboard.
What is the ambient room temperature? Fairbanks or Daytona Beach? Trying to cool a computer in a hot room can be difficult.
09-30-2018 10:37 AM
you should post the workstation question in the workstation forum
are you using the correct HP heatsink? please post the number off the cooler
which cpu are your using? i need the xeon model number
10-01-2018 10:25 AM
you may have a failing motherboard rather than a cpu/heatsink issue
i have 2 z820 motherboards here which power up for about 2/3 min then power off no matter what cpu/heatsink/pwr supply/ram is installed
still, i would try redoing the thermal past between the cpu and cooler, just remember not to overdo the thermal paste
10-01-2018 10:27 AM
Enter BIOS SETUP.
Look for an option to "reset" that warning.
Some motherboards have additional hardware that detects when the side-panel is removed, to indicate that the computer may have been "tampered" with. On such a motherboard, you must enter BIOS SETUP, after investigating the tampering, to "clear" that warning, and thus to "re-arm" the sensor for the next time.
I am wondering if your motherboard has similar hardware, that just ONCE detected "over-temp", and that you need to "reset" the motherboard, to prepare for the next occurrence of the event.
Save/Exit from BIOS SETUP, and power-off. Power-on, and see if the messages still is produced.