So it all started with my laptop getting the “An operating system wasn’t found” error when trying to boot up Windows. I’m using instructions from here: https://support.microsoft.com/en-ca/kb/3103656
I got to this part: “bcdboot C:\Windows /S C:” but when I enter that into command prompt, I get the “Failure when attempting to copy boot files” error.
What do I do?
Solution:
Make sure you are entering the proper command prompt.
And also check the drive where Windows folder is installed. As per that change the drive letter.
If the issue persists, follow these steps to boot into Recovery Environment and try to rebuild BCD.
a. Boot into Windows Recovery Environment using the Windows 10 USB or DVD.
b. Click on Repair your computer.
c. Click on Troubleshoot and in the Advanced options. d. Select Command Prompt. Type the following commands into the prompt and press Enter key after each command.
bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd
Hope this information helps. Please let me know if you need further assistance.


