Need help bad

[Shelia]

My daughter an a friend installed windows xp on my
computer without my knowing it. Now I can't activate
winddows xp because you can't run it on two computers at
the same time.
What I need to know is there anyone that can tell me how
to go about getting windows xp off my computer, as it
stands right now I can't even get on my computer.
Can anyone please help me.

Thanks
Shelia

 

[Dane]

1) Take a Bootable floppy disk (get one at http://www.bootdisk.com/)

2) boot the offending computer with this disk (if it won't start with the
boot disk - your bios can be entered with DEL button pressed after the
keyboard lights flash once. There you can set your system so that the 1st
boot device is the floppy A

3) at the command prompt window type:

format c: <enter>

when it warns you , select Y <enter>

Note: everything on the c: drive will be deleted, so if you have personal
info that must be recovered, you'll need to get a knowledgable helper to
recover that data for you before doing this.