With the serial number everything is ok. I use the correct one for ultimate version but windows doesn't activate. Everything has been done like said here in the forum. It seems to be a problem with the SLIC-Table in Bios. The special Parts in bios contain "zeros".
That is becoming a more common problem with Gigabyte bioses and the isa module. If you and others who have this happen are able to upload an acpiscope report that will help tommy find a better memory address to load the slic to improve the isa for future mods. As for the Easytune and EnergySaver applications not working, there was another motherboard E7AUM-DS2H where the Dynamic Energy Saver (DES) program wouldn't run with an oem modded bios. In the end a ssv3 mod solved the problem. It's possible we might need to do a ssv3 mod for EP45-UD3P for DES to work on it too.
Thanks for the feedback, I am glad you were able to recover. I will let Zort/Medic do a OEM/0+2/SSV3 mod for you