Hi. Someone has installed a watchdog type program on my computer without my knowledge or consent. They said they removed it, but I do not trust their word. How do I find out if my computer still is being watched and how can I remove the files? Is there any software that is NOT removable once installed? I am thinking of just taking out the old hard drive and replacing it with a brand new one. Would that wipe my computer clean if I start over with a brand new C: drive? It is a tower type computer, not a laptop. Thank you for any advice. I can really use the help!