Model A1311 / Late 2009 / 3.06 or 3.33 GHz Core 2 Duo processor

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ATI RADEON graphic card problem

my graphic card RADEON 4670 was dead.

I have sold a new graphic card on internet (ref 661 - 5539), the seller said it's compatible with imac late 2009.

i install it inside and my screen stay black. the imac boots but only my external monitor is working (my sreen is working with old graphic card).

can i solve the problem or i must purchase the 661 - 5308 ? (the good part i think).

on information system, il see that number of ROM and EFI are different.

thank you for your help

Rodolphe

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Chosen Solution

roro974, if it works with the old card and not the new one, exchange the graphic card for the right model.

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roro974 will be eternally grateful.
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