![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/BfnNw.png)
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 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
![IT System Administrator Tuts: HP 8470p laptop error: "The system has detected that a cooling fan is not operating correctly"? IT System Administrator Tuts: HP 8470p laptop error: "The system has detected that a cooling fan is not operating correctly"?](https://i.imgur.com/3WsjJ3T.jpg)
IT System Administrator Tuts: HP 8470p laptop error: "The system has detected that a cooling fan is not operating correctly"?
![Creative IT London on Twitter: "HP Pavillion 15-p099na Beats Special Edition Repair | System Fan (90b) error message Repair | Call Creative IT London on 020 7237 6805. https://t.co/QoiKdLwj8F" / Twitter Creative IT London on Twitter: "HP Pavillion 15-p099na Beats Special Edition Repair | System Fan (90b) error message Repair | Call Creative IT London on 020 7237 6805. https://t.co/QoiKdLwj8F" / Twitter](https://pbs.twimg.com/media/Czey-ViXEAAEKEZ.jpg)
Creative IT London on Twitter: "HP Pavillion 15-p099na Beats Special Edition Repair | System Fan (90b) error message Repair | Call Creative IT London on 020 7237 6805. https://t.co/QoiKdLwj8F" / Twitter
![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/mqdefault.jpg)
FIXED - The system has detected that a cooling fan is not operating correctly || System Fan (90B) - YouTube
![Advisory: HP ProBook 645 G1 and HP ZBook Mobile Workstations - Intermittent System Fan (90B) Error During POST, Computer Shuts Down | HP® Customer Support Advisory: HP ProBook 645 G1 and HP ZBook Mobile Workstations - Intermittent System Fan (90B) Error During POST, Computer Shuts Down | HP® Customer Support](https://support.hp.com/doc-images/308/c05318861.jpg)