I have a new G751JT-CH71 that I am trying to upgrade with a Samsung EVO 850 SSD. I made the mistake of upgrading to Windows 10 before running the Samsung migration tool, and it evidently does not yet support that OS--other tools I have found for making drive clones either also do not support Windows 10 yet, or refuse to create the clone from a 512B sector drive to a 4KB sector drive.
Since I don't really have a guarantee that the Samsung clone would work correctly in Windows 8.1, I would rather attempt a clean Windows 10 install on the SSD (and then just transfer apps over manually) than try downgrading back to Windows 8.1 to try the clone. However, when I try to install Windows 10 on the SSD using the tutorial here (
http://www.tenforums.com/tutorials/1950-windows-10-clean-install.html), after completing Step 13 (partitioning the SSD and installing it as bootable media), I am not able to boot into the drive to complete the Windows 10 installation. I receive this error:
Operating system couldn't be loaded because a required file is missing or contains errors.
Windows\System32\winload.efi is missing
(error code 0xc0000225)
Has anyone else run into this trouble, and fixed it? I would specifically like to fix this without disabling secure boot or enabling legacy boot modes, because I rather like the UEFI features.