2 Replies Latest reply: May 14, 2012 7:13 PM by camnto4
camnto4 Level 1 Level 1 (0 points)

hello. i bought an mac graphics card upgrade and the mac recognizes it. now, i get no video out. i am using a DVI to VGA port which i am using now, so it works fine. below the info on the card as it shows:

  Chipset Model:          ATI Radeon HD 5770

  Type:          GPU

  Bus:          PCIe

  Slot:          Slot-1

  PCIe Lane Width:          x16

  VRAM (Total):          1024 MB

  Vendor:          ATI (0x1002)

  Device ID:          0x68b8

  Revision ID:          0x0000

  ROM Revision:          113-C0160C-155

  EFI Driver Version:          01.00.436



why am i not getting any video off it? and how should i troubleshoot this?

ty for your help.