My neighbour has xp home with ntl broadband. He has about 5 accounts set up. In his infinite wisdom he downloaded an update and now whenever you boot up and whichever account you select, you get an error saying the xp license cannot be verified and there is a problem with activation. The error code is 0x80004005. You cant get into windows to check anything. The ms support doesnt seem to have anything on this so I am now at a loss. I know his xp is valid, it came with his packard bell machine and the licence code is on the side of the case.