Salvatore951
Member
I received many repair request for iMac 27 late 2012 and 2013 with exactly same issues:
-freezing of system
-black screen
-O.S. doesn't complete loading and goes in boot loop
the problem is related to Gpu, but I am quite sure Gpu chip isn't the direct cause of these problems.
symptoms are similar to u8900 failure of retina 15 mid 2012 -early 2013
Can anyone help me? thanks you in advance
-freezing of system
-black screen
-O.S. doesn't complete loading and goes in boot loop
the problem is related to Gpu, but I am quite sure Gpu chip isn't the direct cause of these problems.
symptoms are similar to u8900 failure of retina 15 mid 2012 -early 2013
Can anyone help me? thanks you in advance