I decided that I would delete the programme at which McAfee stalled each time (Microsoft Zoo Tycoon) but it wouldn't let me. It sent me to the Microsoft Update Screen which said that there were 45 critical updates to download. I started downloading the first one - which it did - but then it wouldn't install it I just got the message 'program not responding'.
I spent 6 hours getting nowhere. They want to install broadband but with the way it's working at the moment - wouldn't load software for a digital camera + can't find one of its USB leads - I don't reckon it will work. I'll go back to the engineer and try again. This warranty cost them £200 and so far they won't come out to see to the machine.