My imac won't start up
Left my imac on overnight and woke up to this loading screen on sat
First few times it continued loading to thus screen. Combination of different colours each time
Today I tried googling and managed to get it into recovery but realised I haven't been backing up my machine.
Is there anything else I can try? Thought it was GPU problem but it loaded fine on recovery.
iMac with Retina 5K display, macOS 10.15