[SOLVED] HP laptop says fan error 90b when there is no fan.

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fixthat

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Aug 18, 2015
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I have a hp-15-ac100-notebook-pc-series-touch that is a cheap notebook with a celeron processor and an aluminum plate on the chip that goes over to the vents on the side. There is no fan. It has worked like this for about 4 .years, and this week starts telling me there is a system fan problem. The plate was clean and I installed new thermal paste, updated the bios and held the power button with no cord or battery. The error pops up right away before booting, so it's not hot yet, and I do not feel any heat when it is running.
How do I fix a system fan when there is none?
 
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