Libreboot doesn't support wangdows. Its a feature not a bug
OK, and already made disappear the private software considered OS.
About Windows :)
https://libreboot.org/faq/#windows
Yeah, libreboot does not work with Windows, I think it has to do with
software freedom or something to do with that. If you can't let go of windows
(Nasty OS) for good, don't use libreboot.
this is the compatibility list:
https://libreboot.org/docs/hcl/index.html#supported_list
Here I give you some details, the ones who know, tell me if I can.
Processor: Intel Celeron E3400 2.6 GHz (2 núcleos)
RAM: 4 GB
BIOS: American Megatrends (AMIBIOS)
HDD: SATA, 500 GB
Graphics: Intel G41
OS: Trisquel GNU/Linux 7.0, Windows 7 Ultimate
I read that Windows doesn´t work with libreboot