I just bought a (used) laptop and something strange is going on with the volume scaling. The audio is basically at almost full loudness at a volume of anything above 0. When the volume is at 1%, the laptop sounds like it's at 70% loudness. Volume 2% = 70.5% loudness, volume 50% = 85% loudness, etcetc
I am assuming you are changing the volume in the task bar?
Try going into "Control Panel" and then into "Sound". Next click on the option you want to change (in this case the speakers on the playback tab) and then click Properties. When the new window pops up, click on the "Levels" tab and then change them to a lower amount. You may also want to click on the "Enhancements" tab and make sure nothing there is checked to alter the sounds. When you are done click "Apply" and then "OK" and see if the sounds are better.