Ok before we continue modify your post, take those torrent links off and specify the website name only. There is a rule about about posting non legal torrents here.
Also scan his hard drives for any errors to be sure before we attempt this again.
Just be to sure was his original installation a genuine installation or not if so does he still have his product key to his windows 7 ?
Reason why I am asking you this, if his product key is legit have him put windows 7 back on activate it and leave it that way for abit.
Microsoft will scan his computer and give him the option to move on to windows 10.
If he has windows 7 home oem or windows 7 pro oem he will be assigned to windows 10 pro/home oem.
If its a retail key he will be given a retail iso provided from MS, your only issue is you will need to install windows yourself.
Provided from the microsoft upgrade tool.
Read this link carefully and register with them and ask them for additional help if your still unsure.
http://www.tenforums.com/tutorials/9230-windows-10-iso-download.html
If you do it this way, alot of a problems will be cut out, however even with microsofts provided iso.
If the problem still persist, last resort is try using a different hard drive.
Make sure only the main drive is hooked up the during the installation.