Hi all
I own a Lenovo ThinkPad T430s, X230 Tablet, and now have my hands on a T440. All three machines have UEFI Secure Boot enabled properly, i.e. Windows boot screen shows Lenovo logo instead of Windows logo.
However, if I do a PXE boot (using Windows Deployment Services from Windows Server 2012, not R2) and boot to the same boot.wim provided on a Windows 8.1 ISO image, the boot screen resolution turns crap, and the WinPE environment runs in 640x480. Also, as opposed to the Lenovo logo showing on the boot screen, the Windows logo shows up instead, indicating it's not doing a secure boot?
When booting from a USB stick however, using the same Windows 8.1 boot.wim (copied from ISO), the screen resolution in Windows Setup is detected correctly, and the Lenovo logo shows up.
This occurs on all three machines since MDT was upgraded to MDT 2013 or when I replaced Windows 8 boot.wim with Windows 8.1 boot.wim (as the Windows ADK 8 --> ADK 8.1).
Is there a fix for this? Do others have the same problem elsewhere?
Many thanks Image may be NSFW.
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