I have a strange problem with an XP PC, as follows: This machine was fine until a Spyware Doctor update today, after which the PS2 keyboard failed to be 'seen' at boot-up. The hardware manager has the usual exclamation mark beside it and says that it can't load the driver (Code 39) and that it might be corrupt. I then tried a USB keyboard, with the same result! (Code 39). The machine is otherwise OK, but the keyboard is totally useless. Is this a case for the re-installation of XP, or is there a less time consuming solution?
Thanks for the suggestion - it might be worth a try, but the fact that the PS2 input also failed, seems to eliminate a USB driver problem. It looks more like a fundamental operating system issue to me. Do you agree?