system files error?

i have purchased new computer,and i installed windows 7 in my pc. When i start my computer it gives option - 1. starts windows normally 2. safe mode and others like that. On ontering in option 1 a blue screen comes for a moment indicating some error, after that windows recovery file wizard starts detecting errors in system and again dialog box appears showing two option one is- to send this info or something like that(recommended) and other option is "Don't send". when i click don't send system shut's down. But sometimes when i turn on my pc it doesn't happen. I don't know what is the problem, i re-installed os but still showing same problem. Please Please help me....

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