But it is a sign there is an infection. Just last week I encountered something similar called ZeroAccess which is a rootkit.
The fast test for that one is to run RKILL noted by Grif at http://forums.cnet.com/7726-6132_102-5098912.html?tag=posts;msg5099421
Again, this is not a valid Windows file. autochk.exe does not live in that folder.
How do I fix:
It was caught by ASO System Protector and it cannot be fixed. I have tried to read online what to do but I don't seem to be getting anywhere. Any help would be appreciated.