HP Pavilion dv6 7078ca: laptop fan Hp does not properly

Hello

I use a hp pavilion dv6 7078ca for about two years now. A few days ago, he showed me a B90 error at startup. The error was on the cooling fan will not work correctly. I tried a few methods on other sites such as clean the vents with compressed air, a hard reset and the same update the Bios without success. I removed the keyboard and found that the fan turns, but very slowly and once from time to time he speeds up and slows down again. Temperatures on the laptop seems also about 58 degrees Celsius even with a few applications in the background.

So is there any explanation and correction for why the fan is not accelerate properly and b90 error?

It may be defective and should be replaced.

Tags: Notebooks

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