HolyDoom Witch said:
All right. One way about which I forgot was to open the Realtek Control Panel and raise all the sliders of the equalizer (and save the new setting to load whenever needed). (This is quite effective.)
But still, is there another way through the registry?
You can't push your hardware past 100%, registry or no registry. I don't know if the software keeps volume settings in the registry though, try doing a search for your audio hardware in the registry and see what keys it pops up with.
You may want to check the volume settings in the programs you are using also. Remember that headphones are really rought on your hearing, you don't want to play them too loud.