i accidentally ran mac programme on my windows 7 and now my laptop wont start...what could be the problem?

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Dec 10, 2015
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i accidently ran autotune antare 7 set up for mac on my windows 7 OS and now my laptop cant load the windows start up.its a mini acer aspire v5 computer.Im thinking of reinstalling the operating system but im afraid i will lose my data because i did not partition the drives.
please advise me accordingly.Louis