Could you post some info about your laptop such as Operating System, Service Pack, Ram, Type of Internet Connection, IE9, or IE8, or Firefox browser.
Perhaps you have some corruption in your McAfee files. Could you try to uninstall via Add/Remove programs and reboot the laptop. Then go to Useful Links at the top of this page and run the MCPR removal tool and reboot again. Lastly login to your online McAfee account to download and install your software.
Let us know if this resolves your issue.