There are a couple of tools I like to run to help me with keeping my computers secure, running, and starting. The tools are what I use. There are others that do more or less, just be careful with anything you use that will make modifications to your registry. If you make any changes to the registry always, always make a backup of the registry. Before making any major changes to your PC have a good system backup.
1. Symantec Endpoint Protection – because I’ve been using this one for years and get it free from work to use on all of my home PC’s.
2. CCleaner - is a tool for cleaning your Windows PC and makes your computer faster and more secure.
3. Spybot Search & Destroy - is a free antispyware utility that targets adware, malicious code, and other threats. It also cleans security tracks, shreds files, and tweaks the Registry.