All the tips/hints/fixes/other information posted here are at your own risk. Some of the steps here could result in damage to your computer. For example, using a Windows registry editor like RegEdit could result in unintended serious changes that may be difficult or impossible to reverse. Backups are always encouraged.

31 January 2009

Ugly Noise from Laptop Headphone Jack with AC Power

I plugged a 3.5mm stereo cable from my laptop to some speakers, and there was a horrible noise over the music I was trying to play. I thought at first that the audio cable was bad, but I noticed the problem went away if the AC adapter was unplugged from the computer. Interference from the surge protector's other plugs & transformers resulted in interference. Plugging the AC adapter into an power outlet on another wall solved the issue.

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