There is a known vulnerability in Windows Help and Support Center that could lead to your PC becoming infected from a visit to a malicious website. Experts are now seeing hackers taking advantage of it. There will be an official patch coming from Microsoft, however you can remediate this rather easily with a fix that Microsoft has issued. Simply visit this site and click the Enable This Fix button. You will be prompted to download a small file which you can save to your desktop or other convenient spot that you can easily find it. Once downloaded double click it to execute and follow the simple instructions. My suggestion is to take the time to do this to prevent any possibilities of getting hit with this vulnerability. The Micosoft Fixit Site:

Vulnerability in Help Center could allow remote code execution