I also ran a reg cleaner, but it didn't really seem to do much. They have problems with their power supply and the laptop keeps turning off (which they are getting fixed) so when I ran a defrag of their C: drive, it shut off about half way through.
Anyway, I gave it back to them last night, having done as much as I could (sort of, the power problem gave me real trouble) and this morning my mate has told me that she can't sign in to her hotmail, internet banking etc. but can get into any other website.
I wondered if it was anything to do with a site which needed a username/password etc. but she can use sites like myspace and photobucket. This is obviously worrying her that the only sites which are not working are ones which contain sensitive details etc. I told her that it could help to download Firefox and try and access the sites from there and if that worked, just delete IE7. Would that work?