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  #1  
Old 03-03-17, 20:37
extractor extractor is offline
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Unhappy Secure Boot Violation

When I switched PC (Win 8.1) on tonight the following message appeared
on the screen:
Secure Boot Violation
Invalid signature detected. Check secure Boot Policy in Setup.

The computer is then unresponsive to any attempt to input anything. All
I can do then is switch PC off. (Tried powering on and off a few times but
nothing.) Would appreciate any help to resolve.
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  #2  
Old 03-03-17, 20:58
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Sneakybeaky Sneakybeaky is offline
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Default Re: Secure Boot Violation

https://m.youtube.com/watch?v=l5k3ZhO826Q
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Contrariwise,continued Tweedledee, if it was so, it might be; and if it were so, it would be: but as it isn't, it ain't. That's logic.
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Old 03-03-17, 21:25
extractor extractor is offline
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Thumbs down Re: Secure Boot Violation

Thanks for trying, Beaky, but that video is beyond my understanding.
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Old 03-03-17, 22:18
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fossewayfella fossewayfella is offline
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Default Re: Secure Boot Violation

Got this off Google. Don't know if it helps.

fosseway

Open the PC BIOS menu. You can often access this menu by pressing a key during the bootup sequence, such as F1, F2, F12, or Esc. Or, from Windows, hold the Shift key while selecting Restart. Go to Troubleshoot > Advanced Options: UEFI Firmware Settings.27 May 2014.
Also
Win 8 issues and Secure Boot Violation - HP Support Forum - 5084079
h30434.www3.hp.com/t5/Business-PCs.../Win-8...Secure-Boot-Violation/.../5084079

If you put your problem in Google it throws up various links but obvioulsy for all Windows versions. The one above was for Win 8.
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Old 03-03-17, 22:41
extractor extractor is offline
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Default Re: Secure Boot Violation

Will try out what you suggested, fosseway. Thanks.
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  #6  
Old 03-03-17, 22:53
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calimanco calimanco is offline
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Default Re: Secure Boot Violation

Have you installed new hardware or software recently? If so, you can disable SBV

https://technet.microsoft.com/en-GB/.../dn481258.aspx

If not, something may have installed itself without your knowledge. Check for malware, viruses, PUPs, Rootkits etc.
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  #7  
Old 04-03-17, 07:22
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Sneakybeaky Sneakybeaky is offline
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Default Re: Secure Boot Violation

Quote:
Originally Posted by extractor View Post
Thanks for trying, Beaky, but that video is beyond my understanding.
Oops, Sorry.
What it was suggesting is that you should boot your computer into the bios and then:
Turn off Secure Boot, but do not enable CSM.
The bug has been around for at least three years and that was one of the suggested ways to fix it back then.
Strange it should have reappeared now.
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Contrariwise,continued Tweedledee, if it was so, it might be; and if it were so, it would be: but as it isn't, it ain't. That's logic.
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  #8  
Old 04-03-17, 08:00
Cantrel Cantrel is online now
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Default Re: Secure Boot Violation

When I was Google searching this, it seemed to have first been caused by a Windows Update to which MS issued an antidotal one.

While turning off SB solved it for some, for others it didn't and some had that option greyed out.

We'll have to see if the suggestions help extractor.
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  #9  
Old 06-03-17, 18:31
extractor extractor is offline
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Question Re: Secure Boot Violation

I tried using some of what was suggested here and managed to get into an app. called "onekey recovery". But, using this, have inadvertently restored my
computer to the system default, so now have Windows 8 instead of Windows
8.1 and have also lost all files that were on the computer. I don't think that it can be undone...........or can it?
Is there any way to change back to Windows 8.1 again.
Is it possible to restore computer to how it was prior to my restoration to the
system default?
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  #10  
Old 06-03-17, 21:57
Cantrel Cantrel is online now
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Default Re: Secure Boot Violation

Only if you had created a system image beforehand - a factory reset does just that, although you should be able to update it back to 8.1

https://support.microsoft.com/en-gb/...ate-kb-2919355
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