iMac black screen on boot

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Level 1

4 points

iMac black screen on boot

iMac late 2015 Monterey. Just swapped Fusion Drive for ssd and checked that all good with ssd connected by usb. Used Recovery mode to install OS and made ssd the startup disc. As everything was fine, I installed the ssd in the machine and booted and got nothing. Chimes but nothing on screen. Checked display connections and they seem fine. What could it be? (Brightness is not turned down btw) (and I reconnected the Fusion Drive with identical result)

iMac 27″, macOS 12.7

Posted on Sep 23, 2024 12:03 AM

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Answer 1

PRP_53

Level 10

91,897 points

Sep 23, 2024 4:58 AM in response to Jabby13a

Have the computer evaluated by the Professionals who have the Special Hardware Software and Expertise to diagnose the issue and offer possible solutions

Make an Appointment at the Apple Genius Bar or call 1 800 MyApple and have them evaluate the computer

Other location Call Centres

Contact Apple for support and service

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Answer 2

BDAqua

Level 10

245,501 points

Sep 23, 2024 1:15 AM in response to Jabby13a

The video cable connection is vert fragile.

Also, Use a Flashlight up close at various angles, do you see a faint Desktop?

If you see it then the backlights or inverter is shot.

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Answer 3

BDAqua

Level 10

245,501 points

Sep 23, 2024 6:49 AM in response to BDAqua

Does CMD+F1 "Toggle Mirror Displays"?

⌘ - F1 or ⌘ - fn - 1

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Answer 4

Jabby13a Author

Level 1

4 points

Sep 23, 2024 2:41 AM in response to BDAqua

Thanks. I know that cable is fragile. Ive been very careful with it but while swapping out the hardrive I have connected and disconnected it quite a few times. I can’t see anything at all showing up on screen. However I connected the iMac to an external display with display port to hdmi and on this screen I get a sort of generic Monterey background but that’s it - no icons or text of any sort. I can move cursor on the screen but that’s it. I’m puzzled.

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