My 2023 Razer Blade 16 displays a black screen with a red "Secure Boot Violation — Invalid signature detected. Check Secure Boot policy in setup" message every time I turn it on. I have to press F1 repeatedly, enter the BIOS, disable Secure Boot, and restart before Windows loads normally. However, the problem returns the next day. What could be causing this, and how can I fix it permanently?
3 Answers
Try updating the laptop’s BIOS first. A firmware update may refresh the Secure Boot keys, especially if the current keys are outdated or expired, and could resolve the invalid-signature error.
A failing CMOS battery can cause BIOS settings to reset, although that is less common on newer laptops. If the BIOS clock or other settings also reset, have the battery and motherboard checked.
Check that the BIOS is actually saving the Secure Boot change before exiting. If the setting keeps reverting after a complete shutdown, the laptop may not be retaining BIOS settings properly.
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