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Clover Configurator: Changed to iMac15 now I get black screen(No Signal)

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Oct 24, 2014
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Motherboard
Asus ROG Strix Z490-G Gaming (WiFi)
CPU
i7-10700k
Graphics
RX 5700 XT
Mobile Phone
  1. Android
Hi,

In Clover Configurator, just to experiment, I changed my system from an iMac14,2 to iMac15,1 and when I reboot, not only does my screen go black, but I get the "No Signal" message from my monitor and the power light turns yellow.
I thought I could use Time Machine to reset to the way it was, but when I choose to boot into Recovery HD, I just get a black screen, however I don't get the "No Signal" message, and the power light stays blue.
I did notice when making the selection, the iMac15,1 says i7-4790k, which is the CPU I have, but instead of Haswell, it says Retina HD or something like that.
Is the iMac15,1 setting looking for a Retina card or display and maybe that's why it's giving me no signal?
I have a Nvidia GeForce GTX 770 graphics card in PCI slot 1. Intel HD4600 is disabled in BIOS.

Thanks,
Matt
 
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