cannot get pass 7% witout it failing
Other things to try are use DISM tools to repair your OS Image.
Type CMD
Right-click cmd.exe and select run as Administrator
Copy and paste each tool and allow them to run some will take quite a while as repairs are made.
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /RestoreHealth
Dism /Online /Cleanup-Image /StartComponentCleanup
SFC /scannow
chkdsk C: /f
This may help, can't hurt anything