Windows 10: Brightness, volume, wifi is not working after I do some steps to speed up my computer

I was clean unnecessary files and after I restart my computer the brightness and volume and wifi and much more is not working .I solve the problem and want share with you the solution that work with me and hope work for some people .One of the reason that work with me is on services of drivers that is disabled when I go to system configuration and chose diagnostic mode or selective startup that it will load a part of services and let other, you can go fix it by check that options or go to services just type it on the start button buttom and check the services that have relationship with the u

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Brightness not working on Windows10.

Hi ,

On my Dell 5559 Windows 10 , brightness not working.

Have tried few steps from youtube videos but did not work.

Please guide.

Thanks.

 

How to get speed step to work?

Vista doesnt matter...what mobo is this?

Two bits to say up front. Speed step is controlled by C1E and EIST features in the bios.

Second bit, if he is overclocking, some mobo's will not allow Speed step to work while clocking!

 

Brightness Control not working in Windows 10

Hi Ella,

To adjust the brightness, see the steps below:

• Go back to Power Options, and tick on the High performance.
• See if you can adjust the brightness.

If this not work, we highly suggest that you create an Administrator account, and re-do the steps above.

Let us know how it goes.