Lost all access to browsers a few days back (BT).
Got in touch with BT - who ran all the "tests".
They said the problem was likely to do with the Windows "update".
I was a little skeptical, but let the PC update.
It took a VERY long time, but eventually I was able to access my browsers (Opera, predominantly) however, I had lost my taskbar/all my favourites/address bar items...
I did a full system restore - which again took a very long time (about 15 minutes) - and things were fine afterwards.
Anyone else have similar problems - as I'd never had this problem with updates, over the years?