IMac :: Computer Froze After Loud Speaker Squeal During Video Playback

Mar 7, 2009

I just received my refurb 2.8Ghz 24" iMac today. I have been setting it up and transferring files to it for the last few hours. I just installed 4GB of RAM from Crucial to upgrade from my 2GB that came preinstalled. I opened Hulu and started watching a video full screen while I was working on something in the same room. All of a sudden the playing video froze and there was a loud high pitched squeal coming from the speakers and some crackling, followed by another high pitched squeal from the speakers and then the computer froze.

I know it wasn't a fan noise or a hard drive noise, it was definitely a high pitched audio tone and crackling from the speakers when it hung up. The only way I could make it stop is to hold down the power button and turn it the iMac off. I wonder if it could have been my photo collage screensaver kicking in while the hulu video was playing fullscreen that caused something to lock up? It seems like it was in the timeframe from when I walked away from the computer to the time it crashed.

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Mar 31, 2009

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Jun 5, 2009

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Info:
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Nov 8, 2010

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Nov 17, 2010

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Over the last little while, it's become more constant. When the computer is in use, it'll usually occur quite often. It's quite annoying and obtrusive when I'm watching videos and I'd like to know what it could be.I think our computer is still under warranty, so I'm hoping to find out if it is something wrong, so I can get it replaced.

I've also been wondering if it's a fan, or a regular noise. However, it's so constant that I'm starting to wonder. The other night, I was watching a video and it seemed like it was coming on every 30 seconds for a long span of time. We don't run any memory heavy programs on this computer. If anything, we're just using Firefox, iTunes and/or Messenger. Sometimes Office. There's little to nothing stored on this computer, as it's brand new, so most of its memory is free.

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I have a 2009 iMac with original keyboard, when I press the volume keys to change the sound while watching a video presentation the key clicks are very loud. I went to systems preference to the keyboard and sound icons and could not find a method of lowering the volume..

Info:
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Dec 21, 2009

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What do I do?

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Jun 5, 2012

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Info:
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Apr 17, 2010

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isight

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Mar 5, 2009

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Oct 20, 2010

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Mar 15, 2009

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Jun 15, 2009

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Jul 20, 2009

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Apr 21, 2012

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Info:
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