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How do I fix the system fan error 90b on HP laptop?
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Fix HP Laptop System Fan (90b, 90f) Error Message on Start-up
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cooling fan not operating correctly - HP Support Community - 3271195
Solved: SYSTEM ERROR 90B ( COOLING FAN IS NOT CO OPREATING) - HP Support Community - 6651658
How do I fix the system fan error 90b on HP laptop?
![How to Test a Laptop's Cooling Fan [HP G42 – error 90B] | instantfix](https://instantfix.files.wordpress.com/2012/08/20120818_173858.jpg "How to Test a Laptop's Cooling Fan [HP G42 – error 90B] | instantfix")
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SOLVED: Why is my cooling fan not working (90B) - HP 2000 - 2D22DX - iFixit
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Why is my HP laptop showing "System Fan (90B)" error even after cleaning the fan with compressed air? - Super User
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![Solved] System Fan (90B) Error || The system has detected that a cooling fan is not .....](https://i.ytimg.com/vi/eahSTW9wTh0/hqdefault.jpg "Solved] System Fan (90B) Error || The system has detected that a cooling fan is not .....")