screen black with purple vertical stripe
• . I have a 21.5" 2.7 gHz i5 iMac (late 2012) running OS X 10.11.6.
• . This machine has been my faithful workhorse until, very suddenly, the screen went black. I was not running any intensive applications at the time... had Google Chrome browser and Notes app open.
• . I powered the iMac down and tried the restarting the system via the following:
a) restart; b) reset the SMC; c) reset the NVRAM/PRAM; C) restart in safe mode
-- to no avail -- still black screen but with varying widths of vertical purple stripes.
• I believe the system is operational as my Magic mouse and keyboard lights indicate they are communicating with the iMac however, I cannot see anything on the monitor at all.
Any suggestions on how to fix this or is this a case where some card needs to be replace by a technician?
Thank you!
iMac (21.5-inch, Late 2012), OS X Yosemite (10.10.2), 2.7 GHz Intel Core i5;
