Sorry for laughing at you; I could NOT figure out what on earth this "padlock" thing was! You mean your Caps Lock or Num Lock indicator, correct? This is not a problem. Most computers flash all the lights on their keyboards when they boot up (I suspect they do it to indicate that they've checked all the hardware out, and found it functioning properly). As for the flashing underscore, well, my old Dell Inspiron 1501 always does that for a second (though it didn't used to). I don't think it's really a problem either. It just started doing that one day after I updated the BIOS. I think it might indicate that the BIOS is starting up or something like that.
Anyway, these are really non issues, though I'm sure they seem a bit annoying. There really isn't any way to prevent them from happening, though.
Everytime i swich my laptop (running on Windows XP) on the padlock is illuminated and the screen is black, apart from a white flashing underscore. Any ideas as to how i can resolve the problem?
Any help is much appreciated,