- Close all web browsers.
- Click Start
- In the search box:
- Type control panel.
- Press Enter.
- In the Control Panel:
- Double-click Programs and Features or Add/Remove Programs.
- Select McAfee WebAdvisor or McAfee SiteAdvisor from the list.
- Click Uninstall/Change or Remove.
- When prompted, select only the checkbox next to SiteAdvisor or McAfee WebAdvisor.
- Click Uninstall or Remove.
Then reinstall from here
See if the issue goes away. If not you can try some of the free scanners here