That's good. What I meant is that in order for YOU to see the file, you need to be able to see hidden and system files. Windows however will see the file no matter if YOU can see it or not.
In autoruns I beleive you did not click on "options", then "Filter Options"
Make sure all boxes are cleared in "Filter Options".
Tommorrow I would like for you to delete the task manager in HP-infected. And copy the task manager from Dell2 to HP-infected. Just in case the task manager was infected and actually starting up the malware.
See you tommorrow,
-Alex