Why is my HP laptop showing "System Fan (90B)" error even after cleaning the fan with compressed air? - Super User
![HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly](https://hknow.net/uploadfile/news/20220320101746799.jpeg "HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly")
HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly
I had an HP laptop for 2 years and the battery is on its last breath. Furthermore, its telling me that my cooling fan is not operating correctly. What should I do?
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![HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly](https://hknow.net/uploadfile/news/20220320101746552.jpeg "HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly")
HP手提電腦維修] HP Pavilion dv7-6c04tx, 開機顯示The system has detected that a cooling fan is not operating correctly
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