Tried to dowonload system mechanic7

Question

tried to dowonload system mechanic7 awhile back it only d own loaded half way and then a error came up stating (error1706 no valid source could be found for product scam window installer can not continue) SO WE assumed it didn't go through. and this message comes up everytime my husband turns on his computer. So I am writing this message for him. My name is Jewell Kolcheck screen name is [e-mail] live at 7396 w. co. /rd 400 North North Salem. In 46165 .We do not anything more to do with system mechanic 7. Please help us woth this>