Hi, I’m facing a recurring issue on my Blade 15 Base.
I keep getting this error on startup:
Secure Boot Violation – Invalid signature detected
Pattern:
Happens after shutdown (not just once, keeps repeating)
If I disable Secure Boot → system boots fine
After next shutdown → error comes back again
What I’ve tried:
Reset Secure Boot keys
Enable/disable Secure Boot
Checked BIOS → already up to date
So far nothing fixes it permanently.
Question:
Has anyone else faced this on Blade 15 Base?
Is this a firmware issue, or is there a proper fix besides disabling Secure Boot?


