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HP 24-f0023na Full-HD All-in-One - Secure Boot Violation
09-15-2019 01:04 PM

At start up I get a red screen - SECURE bOOT vIOLATION - Invelid signature detected , check secure boot policy in set-up
09-15-2019 03:02 PM - edited 09-15-2019 03:04 PM

Greetings,
Welcome to the forum.
I am not a HP employee.
I have previously seen this problem in the forum. Offered advice but never received any feedback if the advice was helpful.
The possible cause could be:
BIOS problem with Secure Boot keys,
You have added new hardware, or
You are booting to, or have connected, unsigned boot media in a USB port.
Use this (Link) to see if you can fix the problem per the following troubleshooting steps:
-Try resetting the BIOS to defaults. Located on the main BIOS Menu under (File).
-Try disabling Secure Boot and enabling Legacy Support. Located in the Security Menu, Secure Boot Configuration.
-Try clearing HP's Secure Boot Keys. Located in the Security Menu, Secure Boot Configuration.
Remove any USB device connected to the PC.
Regards
09-15-2019 04:15 PM

Hi Buddavid,
Well , this usually means your PC cannot POST.
You are trapped at the HP logo.
I think you have a BIOS/motherboard problem, (or a component connected to the motherboard), or a peripheral USB device connected to the PC, or possibly a power supply problem. Yes, power supplies can cause strange behavior.
The only other thing I would try is to shut down and disconnect from AC power.
Disassemble the system in a static-free environment.
Remove the CR2032 battery.
Let the PC sit for about 15 minutes.
Reverse this process. Try to start the system again.
No joy means HP service or a reputable, local, PC tech has to check this to find the problem.
No other way to help in a forum.
Regards

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