My sound was very high, but now it's low after my sound problem

Hi guys.

I have a HP Sleekbook touch.. windows 8.1

so, here comes the problem:

When I was trying to listen to a video, I saw a red x on my sound icon.. I found a place where I could fix it, and what I did was: To go to the driver AMD High Definition Audio Device  (or maybe it was another one. Because first there was only one and then it changed to two) and deactivate it, and then restart the PC... That was really easy, and it worked..

However, my laptop's sound had changed really... The sound was low.. From 1-10 my sound is now at 5.. Before that it was at 8-9 pieces. 

I don't what happened.. I need help to change my sound back to what it was before.

Here is a picture of my current status: 

^ This is danish, and it says AMD High Definition Audio not plugged in..

Please help!