I recently bought a second hand computer. it already has XP on it so i just changed the user accounts names to match people using the computer. however, there seems to be a problem with the files. i can't change the names of the user files eg 'my music' comes in my user account with the old users name. i've tried setting up new user accounts and changing names of files, but this doesn't seem to work. can anyone help? can i delete the old users completely and start again?
Why not. It is illegal to sell a computer without the disc for the operating system that is installed on it. It is also illegal to use the operating system without the disc. You may have been a victim of piracy. Go back to the person who sold you the computer and demand the discs, not only for Windows, but for any other programs installed on the machine. If you are refused post back. At the moment it is doubtful if you have a legal copy of Windows.
The only other possiblity is that your installation files may be on a hidden partition on your hard drive. But these usually requires a disc to activate them. What make is the computer?
This computer has been sold with a copy of XP installed. By law the disc for the operating system (XP) should have been handed over with it. Otherwise it could still be used on another machine. There are ways.