Mod Edit: Split from http://www.bleepingcomputer.com/forums/t/491401/high-cpu-usage-ntoskrnl/ - Hamluis.
I had a similar problem last week. I found that Google Earth was doing it. Long story short, I noticed it. I ran Malwarebytes and two other programs that found nothing. I then tried my Auslogic Disk Defragmentator. his usually comes up with about 100 - 200 fragmented files when I run it. It came up with like 9469 files or something and ran for almost ten minutes. It was mainly removing Google Earth files. You can see the files being processed with this defragmentator. I thought maybe my install had become corrupted so I uninstalled and re-installed Google Earth. The first time I opened the program the same stuff started and as quick as I could shut it down (I had to completely restart the PC to stop the hard drive activity. Auslogic found 1265 (these numbers are estimated) that were corrupted and Google Earth only ran for less than 30 seconds. My PC now defrags in less than 30 seconds. I highly recommend the Auslocic Disk Defragmenter.
Edited by hamluis, 22 April 2013 - 12:24 PM.
PM sent new OP.