Solved Computer Turns On But The Screen Stays Black Imac Intel 21 5 Emc 2308

Chosen Solution

Can you turn the computer on the screen never pops on but you can hear the fan running it is a iMac 2009

It was the pram battery I fixed it yessss

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.