Why is the Dolby Audio effect such terrible?

shu

Model: A717-71G-707B (Aspire 7)
My PC came with Dolby Audio and there is no Windows audio enhancer instead.
However, this dolby audio enhancer doesn't work well as treble and bass are enhanced just a little by managing the sound effects via 20 bands in the perspnalize tab.
I turned it off and play music with Windows player and Itunes which is customized its sound by the graphic equalizer.
There is actually big difference between these three audio equalizers.
If I rate it all these three sounds, it will be as 10:10:2 (windows:itunes:dolby).
I don't understand why Acer installed this terrible audio enhancer and took away the windows original.
Can someone provide me a solution?

Sharanji

shu 
>>>Please try a simple power reset. Disconnect the charger. Please check for a battery reset PIN hole at the bottom of the device. The reset hole would have a battery symbol next to it. Insert a paperclip into the hole and press for four seconds. Let the computer sit for 5 minutes with no power. Reconnect the charger and check the issue.

>>>Windows 10 has a built-in troubleshooter to check and fix issues with Sound. I would suggest you to run this troubleshooter to check if the issue is with your Audio 

Press Windows key +X, select Control panel. Change the view by option on the top right to Large icons

Click on troubleshooting and click on the view all option on the left panel. Run the playing Audio troubleshooter

>>>Please check if you have any pending windows updates.

To check for updates now, select the Start  button, and then go to Settings  > Update & security  > Windows Update , and select Check for updates. If Windows Update says your device is up to date, you have all the updates that are currently available.

>>Try reinstalling the audio drivers  Download

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