Hope your not giving these people your personnal info via this computer.!!!
Or for that matter using this pc to do any online payments or purchase's too.
For one it looks as tho the OS came preloaded with a domain login and it for sure is not yours.
As Fuzzy logic has placed here to call the piracy hotline is your best thing and get a good clean legal copy of windows installed on that computer is very best step you can take. Then delte or reformat that computer and throw away the copy you downloaded. Or send it to the ms piracy address provided via ms .
Whatever you do good luck and do come back to wc stardock when you have a better more legal OS.
We here will be glad to help you provided you are a legal pc operator.
Do be more careful what you use on your pc and how and what you use it for espically...~!
SGT