Error 3FO no bootable device found

Original title: Error Renabling UEFI Mode


Last Time i reformated my PC and disable UEFI Mode cause if i dont disable it then i cant format my pc!

[OS Before format : windows 8 pro
[OS after format windows 8 pro
Now after formating, i tried to renable UEFi thus disabling Legacy Mode
and i get the error 3FO no bootable device found!

my hard drive is working properly!


Hi Eddie,



I suppose you have an HP computer.  Please refer to this thread for possible cause of the failure.

Also, refer:

Note: Modifying BIOS settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of BIOS settings can be solved. Modifications of the settings are at your own risk.



I would suggest you to get in touch with HP support.


Hope this helps.

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Question Info

Last updated February 22, 2021 Views 14,927 Applies to: