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I guess that you have never had to remove a digestive biscuit from a floppy drive
I had a good giggle at the above. Both my daughters used our hifi as a piggy bank when they were young. One had one tape draw the other had the other tape draw. I only found out when i tried to play a tape one day. They had managed to stash about fifty pence in one and two pence coins

As for the topic, if the problem is bios related, ie. Bios password dell will only give you a fix if you are the registered owner. There maybe ways around that, but that is not for this forum to discuse (as mentuned befor)

If the problem is the login screen within xp, you have had some good advice given already. If you have problems using that advice come back to us with specifics.