|the real problem is the Antivirus.|
more likley the culpture.
How long ago has this antivirus program been on did the Boss have a difrent antivirus before?
As McAfee has a habit of running in the background constanly scanning every move or twitch.
If youre boss won't mind a fresh reinstall
do make sure that all the driver and OS that came with the Laptop is avaible
but do not install the antivirus
then see how it works.
you can try other antivirus program
NOD32 souppose to be good
or you can try AG free edition.
stay away from Symatic (Norton)
PS make sure you back up all the important data email address and favourite sites and lan setting and so on.
do ask the boss what he need to keep any important data befor attempting to go one step further
Have a Great Day ;-D