My brother gave me this pc so his screen was originally the only screen on this pc and was the Administrator account. I thought I WAS set up as administrator as well, but am not allowed to do things like re-install the web cam. On inspection, I see that I am listed as a reg. user (even though under my name it says 'administrator'. I went into the Administrator account (my brother's) and tried to change the type of account there, but it will not accept the change.
What do I do now? Why is it not allowing the change even though I was in the administrator account?