What's the name of the problem process?
Keep in mind that there are some processes that never show in the task manager. The BIOS time (code on the motherboard) and a key core windows process are in that group. 100% in the task manager is what's left after those have taken there slice of time.
If you can't delete the file or kill the process, it's because it's a key process. Don't even try stopping it.
Electro
April 2011