Windows had come up with a complete security and performance service, which is available for Windows PC.

Windows Live OneCare provides a simple way to take care of your PCs and devices. Use a single OneCare subscription to protect your computers (up to three) from threats, manage network tasks, optimize PC performance with tune-ups, and backup files to a single location.

Some of the features available are -

• Antivirus, Antispyware, Antiphishing, and Online Identity Theft protection.
• Firewall protection against potential hackers.
• Scanning of attachments, and downloading only the virus-free files.
• Protects PC from pop-ups, unwanted programs, and security breaches.
• Central Data back-up done automatically or manually to an external USB drive.
• Backing up of data to another computer through a network.
• Backup of files, photos and selected file types.
• Management of home network.
• Configure wireless network to be more secure using wi-fi connection for approved U.S. routers.

Download the trial version of the software here.
It runs for 90 days as a trial version for free.