I would like to inform you about the result after checked your lap top. Yesterday I tried to take your HDD out to plug in with our laptop to check the data inside your HDD.
Good news, we found your data on HDD still completely. In my opinion, it was problem from windows system not operation. Thus, 1st priority you have to transfer data to the external HDD if you have.
2nd you have to format and installation widows system again. In case, if you need us to help for backup data, please kindly provide external HDD capacity about 500GB to us for transfer information.