I have an :
MacOS Sierra version 10.12 (Haven't updated past this cause it is a work computer)
iMac (27-inch, Late 2012)
Processor 2.9 GHz Intel Core i5
Memory 16 GB 1333 MHz DDR3
Graphics NVIDIA GeForce GTX 660M 512 MB
Overnight when I leave work I log out and put it in sleep mode and when I come in the morning I log in fine. Once I get to the desktop screen the graphics are weird and looks like they get stuck and don't render properly, happens pretty much every day(see attached Image). I have ran Apples Quick 2-3 Minute Hardware test and it didn't find anything wrong with the iMac.
Could this be the graphics card failing (even though the hardware test found no issues) or something else like leaving it in sleep mode over night? Or is it the fact that its a pretty old Model from 2012 and can't really handle 10.12? I have a MacBook Pro (force touch) and Mac mini (2014) at home and leave it in sleep mode every day and never have any issues with that. Currently how I fix it, is turning my computer off and back on and no issues.
Any help is much appreciated
Thanks
MacOS Sierra version 10.12 (Haven't updated past this cause it is a work computer)
iMac (27-inch, Late 2012)
Processor 2.9 GHz Intel Core i5
Memory 16 GB 1333 MHz DDR3
Graphics NVIDIA GeForce GTX 660M 512 MB
Overnight when I leave work I log out and put it in sleep mode and when I come in the morning I log in fine. Once I get to the desktop screen the graphics are weird and looks like they get stuck and don't render properly, happens pretty much every day(see attached Image). I have ran Apples Quick 2-3 Minute Hardware test and it didn't find anything wrong with the iMac.
Could this be the graphics card failing (even though the hardware test found no issues) or something else like leaving it in sleep mode over night? Or is it the fact that its a pretty old Model from 2012 and can't really handle 10.12? I have a MacBook Pro (force touch) and Mac mini (2014) at home and leave it in sleep mode every day and never have any issues with that. Currently how I fix it, is turning my computer off and back on and no issues.
Any help is much appreciated
Thanks