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Stuck on secure boot authorization number during boot using z440

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HP z440
Microsoft Windows 10 (64-bit)


Hi all


I wanted to change Secure Boot to disabled, but after reboot I'm stuck on this message:


Secure boot


A request has been made to change this system's secure boot configuration.

which may affect the secure boot keys and/or disable secure boot.


Please type in and enter the below number for authorization.




I've tried two different keyboards (that worked previously), but it doesn't accept / register anything I type... so the only thing I can do is to hit the power button to turn the computer off, turn it back on and end up on the same message (different code, though) ! i tred also Clearing and resetting the CMOS by Pressing the Clear CMOS button but it doesn't accept!


Any one can help?






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HP Recommended



Well sidestepping the issue, somewhat...


I suggest setting a supervisor password on the BIOS of something simple 'hp' and YES I know it seems stupid, and I am aware it sometimes works, depending on the BIOS maker.


What is want/need to disable Secure Boot for?

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Did you solve this issue? I'm having same now.

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