Answer to "Fan running high, kernel task taking up 500% cpu - nothing running?"Hopefully you have this fixed by now. I ran into almost the exact same problem. I replaced my display which requires disconnecting the camera cable. One of the other responders mentioned that he disconnected the camera cable and the problem went away. I tried the solution and found that by disconnecting the cable my problem also went away. On further examination I realized that I had put the cable in upside down, 180 degrees from what it should have been. I flipped the cable over, plugged it back in and I’m back in business, camera and all. I feel fortunate that I didn’t do damage by incorrectly plugging the cable in.