i had the same issue with my iMac 2010 edition, i read that apparently my hard drive was failing and thought why not give it a shot and replace it, once i did the problem did stop. However in your case it may be a bit more difficult to replace the hard drive seeing as you have a slim model.

i had the same issue with my iMac 2010 edition, i read that apparently my hard drive was failing and thought why not give it a shot and replace it, once i did the problem did stop. However in your case it may be a bit more difficult to replace the hard drive seeing as you have a slim model.

if you get the chance, try this CNET Check if your hard drive is failing

i had the same issue with my iMac 2012 edition, i read that apparently my hard drive was failing and thought why not give it a shot and replace it, once i did the problem did stop. However in your case it may be a bit more difficult to replace the hard drive seeing as you have a slim model.

i had the same issue with my iMac 2010 edition, i read that apparently my hard drive was failing and thought why not give it a shot and replace it, once i did the problem did stop. However in your case it may be a bit more difficult to replace the hard drive seeing as you have a slim model.