How to fix system fan error in HP laptop
In this video, I have shown practical step for how to fix system fan error in HP laptops. HP 720 laptop gives this error if there is a problem with its cooling system. The error is system fan error and the code is 90B. Due to this fault, you may see blue screen, restart of laptop again and again and slow working of your laptop. If you are facing these problems with your laptop then try this solution. Turn off the audio if you don't understand Urdu/Hindi language as I have written main points in English in my video.
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