Well, first remove it with eetech. Then tell us what kind of laptop it is, there may be bios updates etc required.
Thanks Safeboot - we ideally were trying to avoid removing it since it take the day to do that and with it being Friday this user will be out of commission until Monday at the earliest but it looks like that might be our only option.
It's a Dell Latitude E6420
There are a number of articles on kc.mcafee.com for this model, just do a search for e6420.
Most seem to lead towards disabling IRRT and making sure you have the latest BIOS version.