My iMac has a problem with it's graphics boardHi, I need your help again please. My iMac has a problem with it's graphics board: Radeon HD 4850 (1) ROM Revision: 113-B9110...
Apple extended hardware test error codes 4NSN /1/40000000:TH00-9.00what is mean Apple extended hardware test error codes 4NSN /1/40000000:TH00-9.00 Update (08/24/2017): iMac 27" 2.66 GHz intel...
Answer to: Apple extended hardware test error codes 4NSN /1/40000000:TH00-9.00Hi mayer I need your help again please My imac has problem with his graphics Radeon HD 4850: Chipset Model: ATI Radeon HD 4850 Type: GPU Bus: PCIe PCIe Lane Width: x16 VRAM (Total): 512 MB Vendor: ATI (0x1002) Device ID: 0x944a Revision ID: 0x0000 ROM Revision: 113-B9110C-425 EFI Driver Version: 01.00.383 Displays: iMac: Resolution: 2560 x 1440 Pixel Depth: 32-Bit Color (ARGB8888) Main Display: Yes Mirror: Off Online: Yes Built-In: Yes Connection Type: DisplayPort Display Connector: Status: No Display Connected I send it to apple service 2 times but they can not repair it and they can not find a new one to change it and the computer the screen has small vertical lines that flicker, a week ago it was the same and when it closed it did not open again. The screen was black Please help me Thank you