I have got a Toshiba laptop running Windows 8 Pro. When I try to do windows updates and restart the system, I get the error message “Boot Failure: a proper digital signature was not found. One of the files on the select boot device was rejected by the Secure Boot feature.” and stuck on there. Now I am unable to boot to the desktop. I don’t have Windows 8 installation or recovery disc. How can I fix the issues?
You need to turn off “secure boot” feature in the bios to solve the issue.
* Power up your computer and press the DELETE key from keyboard during the initial boot processing.
* While you are in the motherboard’s UEFI firmware settings, click/tap on “Security” menu, select Secure Boot option and press Enter to disable it.
* Click on the Exit menu > Save Changes and Exit to reboot Windows 8 Pro.
Update:If you get “Your PC needs to be repaired” error message after doing above steps, try these tips:
* Disconnecting all peripheral devices except keyboard and mouse.
* Use a Windows 8 Recovery Media to Boot up, go to Trouble Shoot > Advanced Options > Command Prompt, and run the following commands:
Then reboot the PC to check if that fix the issues.