Give this a shot. Install all the RAM. Now we are going to zap the PRAM. Hit the power button and immediately hold down the par,option and command keys and hold them down. The machine should reboot. Continue holding down until it tones three times and release the keys and allow it to boot.
Details:*By default, 8 GB of RAM is installed as two 4 GB memory modules (and two slots are unoccupied). For some curious reason, Apple only permits this model to be configured at the time of purchase with 16 GB or 32 GB of RAM for an extra US$200 or US$600, respectively. However, as first ++determined++ by OWC, it actually can support up to 128 GB of RAM with four 32 GB memory modules.[br]
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At this point I would replace the original RAM and then attempt adding your new RAM. Also your new RAM may just not be compatible with this MAC.
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At this point I would replace the original RAM and then attempt adding your new RAM. Also your new RAM may just not be compatible with this MAC. I would also contact Kingston and ask if the HyperX HX426S15IB2K2 is rated for this iMac.
Give this a shot. Install all the RAM. Now we are going to zap the PRAM. Hit the power button and immediately hold down the par,option and command keys and hold them down. The machine should reboot. Continue holding down until it tones three times and release the keys and allow it to boot.
Details:*By default, 8 GB of RAM is installed as two 4 GB memory modules (and two slots are unoccupied). For some curious reason, Apple only permits this model to be configured at the time of purchase with 16 GB or 32 GB of RAM for an extra US$200 or US$600, respectively. However, as first ++determined++ by OWC, it actually can support up to 128 GB of RAM with four 32 GB memory modules.[br]
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At this point I would replace the original RAM and then attempt adding your new RAM. Also your new RAM may just not be compatible with this MAC.
Give this a shot. Install all the RAM. Now we are going to zap the PRAM. Hit the power button and immediately hold down the par,option and command keys and hold them down. The machine should reboot. Continue holding down until it tones three times and release the keys and allow it to boot.
Give this a shot. Install all the RAM. Now we are going to zap the PRAM. Hit the power button and immediately hold down the par,option and command keys and hold them down. The machine should reboot. Continue holding down until it tones three times and release the keys and allow it to boot.