speaker help

The sound through my computer is very quite and crackly.Its loud wen its turned on and all the sound test are normal too.But when you play music or watch shows u have to turn it all the way up and you can barely here it.some random sounds in the show are louder then others too.Its the same when I plug headphones in the computer. The PC is a dell inspiron and it has realtek HD audio.I turned up all volumes on that and at the control panel.I also ran windows updates.Does anyone know what might be wrong?

Click start - run - type DXDIAG - after that click sound... set the acceleration level to full acceleration...

Maybe that work...

What I understand is your speakers are built into your computer? Your sound card is on-board? I would say your speakers are blown and thus crackle and fluctuate in low arcs, but you say your headphones reproduce the very same issues? I am not familiar with name brand computers, and suggest instead of playing self-diagnostic on gamespot, see a specialist that is competent with your brand of computer.

A small thing to throw in, and you can consider it if you would like: reboot your computer; go into the initial setup; disable HD audio; if disabled, enable. Do not change too many settings at once as you will be at risk of making your problem worse, or creating further issues to diagnose. Remember, don't play doctor unless you have experience as a doctor. Find someone to help you in person from your computer tech. service. Is that not what Dell and other name brand companies are proud of? Their service? Also, you might want to try Geek Squad. I again am not familiar with their practices, but from their advertisements alone they seem to be qualified enough to help you in your dilemma.