F1 Boot - Power Fan not detected

[WarrenGishen]

Hi, when I turn on my PC, an error message appears saying that the power fan has not been detected yet the fan seems to be working fine.  What steps can I take to correct this issue that only just recently started appearing, please?

[DGroves]

i would check that the fan is the correct type, this system uses 3 or 4 wire fans for case and cpu cooling

https://www.amazon.com/CAQL-Cooling-Elite-8000-Compaq/dp/B091PJTF81

if your fan only has 2 wires that's the cause, it's also possible for the rpm sense wire to fail on the fan which requires a fan replacement

last, the power supply has a fan and in the small form factor model (SFF) the power supply fan also cools the pc case

and if this fan fails it's necessary to replace the power supply as opening the power supply is not recommended

SFF supply:

https://www.amazon.com/Compatible-611482-001-613763-001-611481-001-613762-001/dp/B07F3TZPMC

MiniTower supply:

https://www.amazon.com/HP-Supply-HP-D3201A0-508153-001-503377-001/dp/B009252DTA

https://www.youtube.com/watch?v=Mj-_m5Uykog

https://www.youtube.com/watch?v=98PdDwEB3wc