How to restore Windows 8 boot after upgrade?

Question

Windows

They asked me to restore the download of Windws 8. After the update, the eight logo appears, followed by a black screen. When I try to restore the state before the update, it says that no restore points were found.

Answer 1

Try to open the command prompt in recovery mode (admin rights),
then go to the "C:\Windows\System32\Config" directory
, do this with the
cd /dc:\Windows\System32\Config
command, look at the directory (command > _ "dir"), there there will be a backup copy of the registry that is created automatically, always the essence is to replace the files from regback
(do not forget to make a copy of the files that are currently available just in case ) config\system.bak copy c:\windows\system32\config\software c:\windows\system32\config\software.bak copy c:\windows\system32\config\sam c:\windows\system32\config\sam. bak
copy c:\windows\system32\config\security c:\windows\system32\config\security.bak
copy c:\windows\system32\config\default c:\windows\system32\config\default.bak
*Deleting the corrupted file
del c:\windows\system32\config\system
del c:\windows\system32\config\software
del c:\windows\system32\config\sam
del c:\windows\system32\config\security
del c:\windows\ system32\config\default
*Restoring a file from a backup
copy c:\windows\repair\system c:\windows\system32\config\system
copy c:\windows\repair\software c:\windows\system32\config\software
copy c:\windows\repair\sam c:\windows\system32\config\sam
copy c:\windows\repair\security c:\windows\system32\config\security
copy c:\windows\repair\default c:\windows\system32\config\default
reboot and try to start