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I have a 2012 Man Pro Tower OS High Sierra 10.13.6. Installed Radeon RX 580 Pulse Sapphire to upgrade to Mohave. Mac boots Monitor is greenish, flickers to fuzz, black cycle. Have 2x6pin 1x8pin. Even removed 1 6 pin with no difference. FileVault is turned off. Graphic card lacks support.
Thank you!
Ronald Jean
Mac Pro, macOS 10.13
Switch the mac off, turn it on its side open the door and make sure the graphics card is seated properly and securely in either of the two lower PCIe slots. number 1 is at the bottom and 2 is above that.
Did you buy this card recently and is it a new card, does it have a warranty, then contact the supplier.
Switch the mac off, turn it on its side open the door and make sure the graphics card is seated properly and securely in either of the two lower PCIe slots. number 1 is at the bottom and 2 is above that.
Did you buy this card recently and is it a new card, does it have a warranty, then contact the supplier.
It is new from Amazon. This is a replacement, due to issues with first on. It seems to be secure in slot 1.
Thank you for your reply!
Graphics Card
