Okay so recently I've noticed my newly built PC has been getting slower and slower, and me being the the optimistic person i am, I was sure i could fix it( or at least try). I've been using some freeware programs that I had tucked away on a thumb drive(ADW cleaner and after Rkill. ) My PC is now running a bit faster but i am unsure if i left my self vulnerable to possible malware. Is there anything you would recommend to put my mind at ease?