Hello Djn-HP
If there is a issue with your FAN this could be due to a hardware or software issue. I would like to assist with the following steps:
1.) Verify if you hear any grinding Noise or see any obstruction in your Fan
2.) Use a can of compressed air to clean out all of the dust from all fans in the PC.
(NOTE: If possible you can take out the fan and try it in another device, to verify if it is a hardware issue.)
3.) Review the latest BIOS version at this link: https://support.hp.com/us-en/drivers
4.) Install the Hardware Diag tool to review if a Hardware issue is detected:
https://www8.hp.com/us/en/campaigns/hpsupportassistant/pc-diags.html
If you have any other questions or need more clarity, please advise.
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