Hi,
Please clarify,
Can you open the McAfee and let me know what error you get in the Right hand panel?
What type of internet connection you have (DSL, Cable….)?
Post the DAT version and Engine version of McAfee Virus scan (Open Security center-click on about in the Right hand bottom panel-check the Build version and DAT version for McAfee Virus scan)?Did you receive any kind of alert/advertisements or pop-ups in the computer?
Steps
Perform the McAfee Virtual Technician in both computer and post the session ID
http://mvt.mcafee.com/mvt/default.asp