Tuesday, November 05, 2013

UEFI boot fail when changing mobo (Windows 8)

I changed my mobo and I get no boot device.  Here was the fix:

- turn secure boot on
- turn CSMboot to Auto for HDDs
- reboot
- change boot device to UEFI boot (Microsoft boot manager).

If that doesn't fix it
- boot from windows 8
- repair install
- command prompt
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd

If you try those commands and they don't work, or you get the error message "The drive where windows is installed is locked.  Unlock the Drive and try again", go to command prompt again, and do this:
bcdboot c:\Windows /s c:\
(assuming your boot drive is c:

Once you have done all those things, try changing the boot order again in the bios to Microsoft boot manager.

If that doesn't work... google is your friend, I have no idea.

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