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I want to edit the screen which is displayed when windows 8 (starts) loads (/loading).

As for now it has the Toshiba logo, I want my custom logo or the windows default logo.

I have found that UEFI has something called "Boot Graphics Resource Table" and that it overides the default logo if there is a image present (source)

How can I edit the logo stored in UEFI firmware or Boot Graphics Resource Table?

if it's in the "bootres.dll", which does UEFI use? My disk (spread across a few system/usefi/windows/etc partitions) has around twenty bootres.dlls.

The bootres.dll is signed by Microsoft, but I don't have to worry because I can sign the file I edit myself with my own certificate.

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"... with my own certificate" - And will such a self-signed bootres.dll be accepted by the OS? –  Karan May 27 '13 at 2:45
    
my certificate is added to the root store, so it should, just like my own drivers are already accepted. –  user144773 May 27 '13 at 2:51

1 Answer 1

According to a topic on msfn.org, this tool allows you to edit the picture for Intel motherboards:

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seems intel doesn't support my mobo/bios? : / TOSHIBA QFKAA bios version 6.4 –  user144773 May 27 '13 at 7:56
    
I have no idea, I've never tried the tool. –  magicandre1981 May 27 '13 at 17:16

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