One of the laptop speakers make crackling noise. Reinstalling the operating system and audio driver does not fix the problem.

Possible cause:

1. Failed laptop speaker.
2. Failed sound card.

Possible troubleshooting steps and repair solution:

If one of the laptop speakers started makig crackling noise, the first thing to do is test the laptop with headphones.

If both channels in headphones sound normal and crackling noise comes only from one of the laptop speakers, you have a faulty speaker and it has to be replaced.

If you hear same crackling noise from one of the headphone channels, most likely there is a problem with the laptop sound card. In most laptops the sound card is integrated into the motherboard. If the sound card fails, you’ll have to replace the whole motheroboard.

Sound stutters while playing an audio file from the laptop hard drive. The problem happens only when the laptop is moved or lifted.

Possible cause:

Hard drive protection is enabled.

Possible troubleshooting steps and repair solution:

Most likley the sound statters because you have the hard drive protetion utility installed on the laptop and it’s enabled. When you move the laptop, the hard drive protection kicks in and the read/write heads go into park position freezing the laptop for a fracture of second. Apparenlty this causing the sound to statter.

You can disable the hard drive protection for a while and see if it fixes the problem.

Also, try reducing the movement detection sensetivity in the hard drive protection utility.

The laptop starts properly but the sound coming from the laptop speakers and headphones is garbled.

Possible cause:

1. Software related problem.
2. Failed sound card.

Possible troubleshooting steps and repair solution:

If you hear garbled audio from both the laptop speakers and headphones plugged into the audio jack, this problem is not related to the laptop speakers. It’s either a sotware related problem or the laptop has a failed sound card.

1. Try reinstalling the audio driver. You can download the latest audio driver from the manufacturer’s website.

2. In some cases reinstalling  just the audio driver doesn’t help to fix the problem. Try reinstalling the operating system from scratch. Back up all personal files and run the laptop recovery disc or installation CD.

3. If the garbled sound is still there even after reinstalling the operating system, this is related to the sound card.

Unfortunately, in most (if not all) laptops the sound card is integrated into the motherboard. When the sound card fails, you have to replace the whole motherboard.