Replying to So my sound card exploded...

And some really weird this are happening. Does anyone have any expainations. I have an Acer Aspire 5102WLMi.

When the sound went out, it made a cracking sound in distortion then my computer crashed. I dont have any sound anymore. I locked out the sound card through the control pannel. But now, my computer looses keyboard, mousepad and USB ports on occasions. Last night I spent an hour trying to get my computer to boot. Every time I turn it on, the screen fails to start and the computer just idles.Sometimes the speakers crackle during a failed start. After that hour the computer booted itself without changes to the settings and now works almost normally.

Other than a new computer, can someone explain what the fuck is happening and a way to fix it. None of this is because of a virus btw.