The intel me driver is unmodified and from intel and was in the intel me driver package in the windows 8 folder. I did not ask you directly, this was a general request to anyone who is able to sign the sys driver files.
As for nvidia, see reference there Resolve the issue of Nvidia's latest win7 driver not working due to the signature！ , the drivers are because of no more allowed signed drivers for windows 7 and windows 8 by Microsoft onyl usable with windows driver signature check disabled.