![Why is my HP laptop showing "System Fan (90B)" error even after cleaning the fan with compressed air? - Super User Why is my HP laptop showing "System Fan (90B)" error even after cleaning the fan with compressed air? - Super User](https://i.stack.imgur.com/1kkP2.jpg)
Why is my HP laptop showing "System Fan (90B)" error even after cleaning the fan with compressed air? - Super User
![FIXED - The system has detected that a cooling fan is not operating correctly || System Fan (90B) - YouTube FIXED - The system has detected that a cooling fan is not operating correctly || System Fan (90B) - YouTube](https://i.ytimg.com/vi/H03gzUTJqwg/maxresdefault.jpg)
FIXED - The system has detected that a cooling fan is not operating correctly || System Fan (90B) - YouTube
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![Come riparare su un notebook HP l'errore System Fan (90b) cooling fan not operating correctly - YouTube Come riparare su un notebook HP l'errore System Fan (90b) cooling fan not operating correctly - YouTube](https://i.ytimg.com/vi/4Yhz67S-W9I/maxresdefault.jpg)