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- CPU 2 Fan out of control

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12-28-2022 10:55 AM
Hi,
Desperate here. My system was working fine until I upgraded my graphics card. After the upgrade I am having a huge issue with the second CPU fan. It started running at full throttle and would not stop no matter what I did. Namely, switching fans from CPU0 to CPU1, changing CPU positions, replacing the fan, plugging GPU in different PCI slots. Nothing helps. I am sure it is not a software or BIOS issue. The throttle begins as soon as power is pressed. At this point I am out of ideas what is causing this. Faulty motherboard, CPU? Everything else is working fine and the pc passes all diagnostic tests with flying colors. Just the darned fan noise is so annoying.
12-29-2022 10:39 AM - edited 12-29-2022 10:44 AM
what is the video card you installed?
the base models came without optional cooling fans and higher wattage power supplies
so i suspect the bios when querying the system components on startup is detecting the increased power draw of the video card or that you indead do have a overheating issue on cpu 2 (check cpu temps) using a program like
HP Performance advisor, or aida64
https://www.hp.com/us-en/workstations/performance-advisor.html
however what is strange is that you appear to have a dual CPU model system and that only cpu 2 fan not the case fan(s) is ramping up in speed
i would contact HP support as this series model is still under factory warranty support