Lenovo b590 power management not working

Hello! I have a problem with my laptop, a lenovo b590. (pentium 2020m, 4gb ram, intel hd graphics): the Lenovo Power Management driver not working....
Is exactly the same as here, but, the only difference is that I use windows 8.1:
https://forums.lenovo.com/t5/Lenovo-3000-and-Essential/Lenovo-B590-Lenovo-Power-Management-driver-no...
As no one could solve the problem there, I thought it may be more visible now and someone can help me
So, how can I solve this problem?
Edit: I tried everything that was said there, to no avail ...
Sorry for my english..

i'm not sure if there's any suitable cooling pads for your computer but cleaning the fan could be another solution. it may work but it may also void your warranty.
due to it's probably hardware issue, at this point i don't think i have much suggestions for you.

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Additional Information 2:   7b6a241cd5acb7cb19b55244a6b1c2be
Additional Information 3:   89fa
Additional Information 4:   89facf7baa71ae93e2d8f09d94febc53
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