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Apple Computing Products:
macOS - Desktop Hardware
iMac Suddenly Slow Performance - Please Help?
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<blockquote data-quote="Lifeisabeach" data-source="post: 1455104" data-attributes="member: 38864"><p>If the fan turned off normally before the drive was replaced, and now it won't turn off, then the people who replaced it screwed up. Simple as that. With the 2009-2010 iMacs, you HAVE to replace the drive with one from the same manufacturer, or a cable that plugs into the drive for temp monitoring won't plug in (the cable is different for each brand) and the fans will run non-stop. You didn't say what hard drive you have now, but if it's not a Seagate, then right off that's part of that problem.</p><p><a href="http://macs.about.com/od/faq1/f/upgrade-hard-drive-in-late-2009-imac.htm" target="_blank">Upgrade the Hard Drive in a Late 2009 iMac - Special Heat Sensor Cable Used in Late 2009 iMac Hard Drives</a></p><p></p><p>As far as the performance issues you are having, you really should elaborate on what you mean by "the iMac is behaving in a similar fashion to the way it was behaving immediately before the previous HD failed". Since I don't know what that "fashion" was or is, I don't know how to proceed. That said, if this was a hardware problem, replacing the drive wouldn't have fixed it, whatever it is, even temporarily. I'd wager you have software issues, and if you did a clean reinstall of OS X to the new drive, then it may have taken this long for the problem to re-surface. But please post back with details of the issues. And take note of my signature.</p><p></p><p>EDIT: one thought just occurred to me... if you have a different brand hard drive, and knowing the temp sensor literally won't plug into the new drive, then WHAT did they do with that cable? Leave it hanging?</p></blockquote><p></p>
[QUOTE="Lifeisabeach, post: 1455104, member: 38864"] If the fan turned off normally before the drive was replaced, and now it won't turn off, then the people who replaced it screwed up. Simple as that. With the 2009-2010 iMacs, you HAVE to replace the drive with one from the same manufacturer, or a cable that plugs into the drive for temp monitoring won't plug in (the cable is different for each brand) and the fans will run non-stop. You didn't say what hard drive you have now, but if it's not a Seagate, then right off that's part of that problem. [url=http://macs.about.com/od/faq1/f/upgrade-hard-drive-in-late-2009-imac.htm]Upgrade the Hard Drive in a Late 2009 iMac - Special Heat Sensor Cable Used in Late 2009 iMac Hard Drives[/url] As far as the performance issues you are having, you really should elaborate on what you mean by "the iMac is behaving in a similar fashion to the way it was behaving immediately before the previous HD failed". Since I don't know what that "fashion" was or is, I don't know how to proceed. That said, if this was a hardware problem, replacing the drive wouldn't have fixed it, whatever it is, even temporarily. I'd wager you have software issues, and if you did a clean reinstall of OS X to the new drive, then it may have taken this long for the problem to re-surface. But please post back with details of the issues. And take note of my signature. EDIT: one thought just occurred to me... if you have a different brand hard drive, and knowing the temp sensor literally won't plug into the new drive, then WHAT did they do with that cable? Leave it hanging? [/QUOTE]
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Apple Computing Products:
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iMac Suddenly Slow Performance - Please Help?
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