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carversmith
Fanfold Paper
Posts: 8
Registered: ‎01-22-2018
Location: US
Views: 1,570
Message 1 of 6

Windows 10 version 1803 secure boot violation

My friend had her M800z updated by MS 1803 I suspect and now it boots to  Secure Boot violation Invalid Signature detected check secure boot policy.  I disabled secure boot per some suggestiuons and it does not boot.  Any ideas?

 

I just booted from my 1803 usb stick, trouleshoot, restore and picked one 2 back, it took 20 minutes so it did something and I think it restored just fine,

still won't boot with the same message.  Turned off secure boot in BIOS and it does not find operating system

Secure Boot violation Invalid Signature detected check secure boot policy.

Lenovo Employee tictac1
Lenovo Employee
Posts: 52
Registered: ‎06-19-2018
Location: CN
Views: 1,530
Message 2 of 6

Re: Windows 10 version 1803 secure boot violation

May I know your BIOS version? Can you boot into Windows if re-enable secure boot in BIOS?

carversmith
Fanfold Paper
Posts: 8
Registered: ‎01-22-2018
Location: US
Views: 1,514
Message 3 of 6

Re: Windows 10 version 1803 secure boot violation

FVKT43AUS

 

Seems like there might be a later Bios.

 

No it won't boot at all into windows.  It can boot from  1803 USB stick updater.

That is where I did a system restore but the same error.

This must be a Lenovo problem as it worked then didn't work and onoy

MS was in the middle and of course it is beyond warr by 5 months.

I was thinking of doing 1803 reinstall keeping files that as last resort as there is not a lot of

stuff to save.

Thanks

 

Lenovo Employee tictac1
Lenovo Employee
Posts: 52
Registered: ‎06-19-2018
Location: CN
Views: 1,477
Message 4 of 6

Re: Windows 10 version 1803 secure boot violation

Have you tried to load default BIOS setting by pressing F9?Secure boot is related with some other settings,like OS optimize.

If it doesn't work still,I think you could flash the latest BIOS version 57 before reinstalling 1803.

carversmith
Fanfold Paper
Posts: 8
Registered: ‎01-22-2018
Location: US
Views: 1,462
Message 5 of 6

Re: Windows 10 version 1803 secure boot violation

I dug out my licensed copy of    EasyRE Professional for Windows 10 from Neosmart,

but needed to up date it, costing $35.  Built bootable USB, booted it, ran it, autofix

and it fixed the problem.

Thanks

Carver

Perkasa
What's DOS?
Posts: 1
Registered: ‎12-18-2018
Location: ID
Views: 403
Message 6 of 6

Re: Windows 10 version 1803 secure boot violation

In some cases it Caused by BCD file is damaged

The BCD(Boot Configuration Data) file that contains boot configuration parameters for Windows system, is a very important part of booting process. If that file becomes damaged, then the boot process is halted.

 

To do so, follow these steps:

1. Boot from the install media until you reach Command Prompt

 

2. When Command Prompt appears, type this command:

diskpart

 

3. Press Enter

 

4. Then type:

sel disk 0

 

5. Press Enter

 

6. Then type:

list vol

 

7. Press Enter

 

8. Check the volume listed by Command Prompt with FAT32 at the Fs column.

Once you identified the volume, type this command:

sel vol 2

Replace 2 with the volume’s number.

 

9. Press Enter

 

10. You need to assign a new letter to this partition.

The letter must be unique, e.g. it can’t be c:

assign letter x:

Replace x: from the command above with a unique letter for this partition.

 

11. Press Enter

 

12. Wait for the confirmation message from the diskpart utility to appear:

DiskPart successfully assigned the drive letter or mount point.

 

13. Then type:

exit

 

14. Press Enter Then type:

cd /d x:\EFI\Microsoft\Boot

Make sure to replace x: with the letter you’ve assigned earlier.

 

15. Press Enter Then type:

bootrec /fixboot

 

16. Press Enter Then type:

ren BCD BCD.Backup

This will create a backup of your current BCD file.

 

17. Press Enter Then type:

bcdboot c:\Windows /l en-us /s x: /f ALL

Make sure to replace x: with the letter you’ve assigned earlier.

 

18. Press Enter

 

19. Remove the install media from the disc tray or USB port

 

20. Type:

exit

 

21. Press Enter

 

22. Restart the computer

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