My question is specified in the title, to be more exact I would like to show this particular screenshot of the sound mixer:
As you can see here, the volume of the IE reached the maximum level, but the device volume barely exceed the middle.
There are more crucial problems here - even if I set all settings to max, many games or movies are really quiet, and in accordance with the mixer, they don't use whole volume of the device.
Why is it happening? Is there any other explanations except outdated drivers (my laptop is somewhat outdated, so there are a number of modern drivers not officially supported by the laptop)?
Technical details: laptop HP Pavillion dv7 6053er. I don't know the exact model of my sound card, but my Device Manager says "IDT High Definition Audio Codec" + "Audio Intel(R) for Displays" and meanwhile I have beats audio logo on the bottom of the laptop.
To be more precise, I can toggle mixer to any level of any app without any problem, but i don't understand why max possible volume of an app doesn't indicate max volume in the device mixer. The master volume never reaches 100%, and if i change it, the app volume changes respectively
EDIT v2. If it helps - i found that this problem doesn't happen when a headset is plugged. Also here some other screenshots with other programs that tell that this problem is system-wide: