If you are certain that you have done everything listed in this document Required Reading - Home User Assistance Malware Troubleshooting then please try to uninstall your software via Add/Remove program and reboot. Next step is to go to Useful links at the top of this page and run the MCPR removal tool which will remove any remaining traces of McAfee that might have been corrupted from your virus issue(s) and reboot again.
Follow the instructions in this link to prepare your computer for the installation of your software and be sure to run the McAfee preinstall tool which is included in the link.http://service.mcafee.com/faqdocument.aspx?id=TS100119
Login to your McAfee account and download and install your software and let us know if it works for you.
Thank you k3tg for all of that information it was very helpful and now I've McAfee downloaded and running.
Also, thank you Peacekeeper for the help even though k3tg's help was enough to fix my problem.
No problem mine was only a backup option