HT201191: Install memory in an iMac
Learn about Install memory in an iMac
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Helpful answers
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Nov 21, 2013 9:04 PM in response to SandESolorioby rkaufmann87,Exactly what RAM did you install, include the manufacturer and exact specifications. If you put the old RAM back in does the comuter start normally, if so then your RAM is either installed incorrectly, is the wrong RAM or is defective.
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Nov 21, 2013 9:12 PM in response to rkaufmann87by SandESolorio,I put the old ram back in same slot, plug it in, turn it on and it tries to restart but then shuts down. It was a PNY 4gb DDR3 sdRAM
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Nov 22, 2013 5:56 AM in response to SandESolorioby rkaufmann87,Did you firmly push in all the RAM so that it clicks into place? What is the full specifications on the PNY RAM you bought, you haven't provided that information.
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Nov 22, 2013 9:16 AM in response to rkaufmann87by SandESolorio,Pushed in RAM - never did hear a click but it won't budge to me indicating its in as far as it can go.
This is what is on the package: PNY 4GB DDR3 PC3-1066 compatible with 1333 MHz 1066MHz Mac compatible
The screen I get when trying to reboot is grey with apple logo and progress bar that gets a 1/4 way filled and I hear a click and shuts down. Doing a soft boot gives me a list of actions, then it shuts down midway thru.
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Nov 22, 2013 9:36 AM in response to SandESolorioby MichelPM,Macs are picky about the type of RAM they need.
Strongly suggest returning the PNY RAM and get your money back.
Correct and reliable Mac RAM can be purchased from online Mac RAM sources Crucial memory or OWC (macsales.com).