Reset up my operating system using a picture of a windows XP

I made an attempt to reset up my operating system using a picture of a windows XP disk that I had downloaded and affixed. I started my personal computer but then it asked me for some update packages but this was after it loaded.
Having no idea about all this, I abandoned the operation. Now the computer just starts up and inquires from me whether I would wish to install windows XP and to this extent, there’s no other operation that I can carry out.
