Secure Boot Violation. Invalid Secure Boot Policy

  compumac 09:32 29 Jul 2018

My daughter has a Samsung NP355U5c laptop upgraded from Windows 8 to Windows 10. The unit has been working perfectly well until yesterday when upon switching on displayed the following

“Secure Boot Violation.”

“Invalid signature detected. Check Secure Boot Policy in Setup.”

In Setup Secure Boot Policy displays enabled.

Searching the internet suggested disabling Secure Bot Policy, which we did but it made no difference

Any help appreciated.

  Fruit Bat /\0/\ 09:58 29 Jul 2018

when you disabled it did you save and exit (using f10)?

  Fruit Bat /\0/\ 09:58 29 Jul 2018

also disable fast boot and retry.

  compumac 10:33 29 Jul 2018

Fruit Bat /\0/\

Yes exited using f10 to save.

Had not tried Advanced/Fast Bios Mode.

Now tried disabling fast BIOS Mode but still just the same.

Finishes with Samsung Logo and then zilch

  Fruit Bat /\0/\ 16:01 29 Jul 2018

Download and make the windows 10 boot media so that you can repair windows.

if the machine will not boot from USB then:

look for CSM setting to enable it and then you can boot from a bootable USB a to repair windows start ssystem

  compumac 19:01 29 Jul 2018

Was able to boot up from Win 10 DVD and tried repair.

"Local disc has errors" Scanned and tried to repair errors, but could not repair.

Was able to access System Restore but after an hour received message could not be restored.

I think a visit to loacl computer shop might be the answer unless there are further suggestions.

  [DELETED] 19:19 29 Jul 2018

Local disc has errors

Sounds ominous. Has some success with Macrium Reflex's recovery disk with a friend's laptop which had a dying hard drive. Booting from the recovery medium and repairing boot, Link.

Got it to boot and was able to copy data off it before it went belly up completely.

  compumac 08:32 30 Jul 2018

The laptop had initially Win 8 installed and then updated free to Win 10. Also Microsoft Office was purchased and installed in 2013. There is a receipt to hand from Microsoft Office but that is all.

There are no discs with the laptop and there has been no images made.

If a new drive in the form of an SSD was to be purchased what are the implications of being able to install Win 10 and Microsoft Office?

  [DELETED] 11:31 30 Jul 2018

There would be no problem with Windows as it's tied to the motherboard and the Microsoft account. As for Office I think you would need to contact Microsoft as you have a receipt. If you download Macrium Reflect on another PC and create the rescue medium have a go at repairing boot with that first. Might get lucky so you can at least get some data off the drive if it is failing.

  Fruit Bat /\0/\ 18:51 30 Jul 2018

Chkdsk /r c:

  compumac 11:18 01 Aug 2018


HDD was duff

Now replaced with SSD

Thanks for all input

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