Vista on computer and someone put it on Windows 7, now can't come back on Vista

I had windows vista on my computer and I had someone put on windows 7, now I can't go back to windows vista. can you please help me and tell me how to get back on windows vista because windows 7 will need a restored drive now and I don't want to pay $100,00 so he can work in that it has expired. What should I do to get back to vista and how can I get a restored vista disk? can it be sent to me and how much does it cost?

* original title - need help *.

See: How to replace the lack of software Microsoft Carey Frisch

Tags: Windows

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