Several days ago, my father's computer had a CPU fan error during its BIOS tests when he turned it on. I presumed that the fan was not functioning properly due to having collected a large amount of dust, so I opened its case and saw that the CPU fan did, indeed, have a great amount of dust. Therefore, I cleaned out the dust and restarted the computer, and the error did not reoccur. However, the next day, the error occurred again, and, that time, I was uncertain what could have caused it, so I entered the settings for the computer's BIOS and changed the power profile from "power saving" to "normal," and the error has not yet reoccurred since then.
Since I am pursuing a career in technical support, I need to be able to handle issues such as this with complete certainty and no hesitation, so the fact that I was uncertain of what to do the second time that the error occurred is not a good thing. What would anyone else here do if a CPU fan error reoccurred after cleaning the dust from the CPU fan? What advice can you offer on this subject? Thank you very much.