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Hi,
I've got a 2011 iMac that I can't seem to re-install any version of MacOS on. I've tried installing both Majove (10.13) and High Sierra (10.12) from a USB drive and the problem is either that it gets stuck in a reboot loop, or I see the non-bootable disk icon when trying to boot from the USB drive.
I even have original install DVD for Snow Leopard (10.6) which I've tried but I get the following linux screen:
Not sure if that gives any clues as to a possible hardware problem or whether it's simply that Snow Leopard won't run on a 2011 iMac.
A bit of further background: I used to have two external displays connected to the iMac and during a recent MacOS update I foolishly decided to disconnect one of the displays. This caused the Mac to crash and get stuck in a reboot loop which I finally got around (can't remember exactly how). But since then the Mac will only boot if one of the external displays is connected. If I tried to boot without a display connected it would simply get stuck in a loop.
Currently the Mac isn't bootable at all.
Admittedly it's been a while since I've attempted to resurrect the Mac again but does anyone have any suggestions for what I could try or what might be the problem? The main goal is just to re-install a working version of MacOS again.
Thanks.
I've got a 2011 iMac that I can't seem to re-install any version of MacOS on. I've tried installing both Majove (10.13) and High Sierra (10.12) from a USB drive and the problem is either that it gets stuck in a reboot loop, or I see the non-bootable disk icon when trying to boot from the USB drive.
I even have original install DVD for Snow Leopard (10.6) which I've tried but I get the following linux screen:
Not sure if that gives any clues as to a possible hardware problem or whether it's simply that Snow Leopard won't run on a 2011 iMac.
A bit of further background: I used to have two external displays connected to the iMac and during a recent MacOS update I foolishly decided to disconnect one of the displays. This caused the Mac to crash and get stuck in a reboot loop which I finally got around (can't remember exactly how). But since then the Mac will only boot if one of the external displays is connected. If I tried to boot without a display connected it would simply get stuck in a loop.
Currently the Mac isn't bootable at all.
Admittedly it's been a while since I've attempted to resurrect the Mac again but does anyone have any suggestions for what I could try or what might be the problem? The main goal is just to re-install a working version of MacOS again.
Thanks.