Laptop fan sounding like a chainsaw or something.

Feb 16, 2018
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Hey,

I own an HP pavilion 17. I had it in a bag a day and then i stumbled and fell... Some days after that my fan started to sound like an chainsaw or an dirtbike. The laptop makes this noise when it's not under load when i turn on an recourse heavy application my fan becomes more silent and like it is supposed to run, kinda a little bit backwards right? Moreover very often when i turn on my system it displays a black screen saying that an system fan is not operating as supposed to. Is there a fix for this or do i have to replace the fan?