0
votes
1answer
85 views

Secure boot validation failure loading ext4_x64.efi

My setup: - Lenovo U510 with preinstalled Windows 8 - UEFI and Secure Boot enabled - Fedora 20 installed on a new ESP partition Having two ESPs I wasn't able to boot Windows with grub, so I ...
6
votes
2answers
4k views

Windows 8 to 8.1 Pro Upgrade SecureBoot Error

I upgraded from Windows 8 to Windows 8.1. I have an Alienware Aurora R4 with the latest BIOS firmware version, A09. Ever since I did the upgrade, I get a watermark on my desktop saying, "SecureBoot ...
2
votes
2answers
1k views

How can I disable SecureBoot when my system won't boot?

I recently upgraded from Windows 8 to 8.1 and received a warning that SecureBoot was not properly configured. I proceeded to try correcting this by installing the default keys from the BIOS and ...
0
votes
2answers
3k views

Is it possible to make a EFI file to boot Yumi USB flash drive?

2 days ago I've bought an HP Envy laptop, which comes with Windows 8 pre-installed. Before that I were using Yumi USB flash drive with a dozen of boot options to set-up the computers (e.g. ...
0
votes
0answers
700 views

Multi-boot USB using Windows bootloader and UEFI, for WinPE 4.0 and Windows 8 installation

I have a large USB drive that I would like to use to multi-boot several Windows products. The way my project seems to differ from every other thing I have found on Google is that I want it to work ...
3
votes
1answer
1k views

Windows 8 Secureboot: How do you bootup from another device such as cd/dvd drive or usb flash etc.?

On PC's and laptops running an older OS, this is just a simple matter of going into the BIOS and setting the boot sequence and putting the boot cd/dvd in the drive. In many cases you can even just hit ...
8
votes
2answers
5k views

Is there something like a BIOS in Windows 8? [closed]

Is there something like a BIOS in Windows 8? How can I set up the boot device priority? My problem occurs when switching on my computer. It immediately goes to Windows 8 loading screen without ...