Very little output sound

Lost as in 0 or little like your title states? Speakers unplugged or turned off maybe? Try different speakers maybe. Try front and /or rear outputs if you ahve both. Check volume controls, in Windows as well as whatever application you are using for playing the sounds. Make sure nothing is muted.

As a last resort, try a new sound card. Even if it's a laptop, you can buy an external sound card for it.