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Original post by: aza ,


i have got same issue and the problem is Graphic card. The solution have simple if u have a little electronic skills. teardown imac and remove the graphic card. and also remove gpu coller. your graphic card must be like this [|picture of gpu] after that u must be very carefull this proses. first u clean gently with alcohol and toothbrush. after that u bake in oven like this [|video] after that your graphic card work.

this solution is riskly and get your own risk.

your gpu has died also, maybe u can take it life back again