Moved to our SecurityCenter area. Hopefully an expert can help you soon.
Could you please let us know the following information;
What is the operating system in the computer?
Do we receive any error message while running a scan ? (If possible attach a screen shot of the error)
Run mcafee virtual teachnician from this link : http://mvt.mcafee.com and post me your session id.
Do we have any other security software installed on the computer ?
Please let us know the above information so that we could help you with our best here
McAfee Online Community Moderator