crwdns2934241:0crwdne2934241:0 Ramin

crwdns2934249:0crwdne2934249:0:

Have the same problem as above with my 27” 2011 iMac. Tried everything. If yhe problem is the Video Display Card, would the Apple Hardware Test confirm it?

crwdns2915684:0crwdne2915684:0:

open