Computer turns on but the screen stays black
Can you turn the computer on the screen never pops on but you can hear the fan running
it is a iMac 2009
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That sounds like your GPU is gone. Let’s try this press and hold the T key go get into Target Disk Mode, Do you see a FireWire icon on your display? If you do then your dedicated GPU has failed.
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I found out is was the pram battery easy fix.
2 Comments
https://www.techradar.com/au/how-to/comp... <--- this might help you :)
by James
Thank you I will try this. It is crazy cause when I power up the iMac it doesn’t chime on at all fans runs on high and stays dark.
by cliftonerhodes