After installing Win 10, the computer is stuck after restart 'can find root dir' HELP. How can I solve this problem?

[Windows Central Question]

After Installing win 10, the computer stuck after restart 'can find root dir' HELP

After Installing win 10, the computer stuck after restart 'can find root dir' screen is showing. Looks very problematic, very disappointing. All of my stuff on the computer. How can I solve this problem?

Thanks in advance.