On a i3 530 system with a Gigabyte GA-H55M-UD2 motherboard. Installed Bypass ESU on Windows 7 Home Premium and uninstalled telemetry updates. I run 7loader and I get a "The serial cannot be installed" error message . Tried wat fix, legacy memory, type 3&4 still same error
You need activate Windows first, then use ESU bypass. On unsupported ESU Editions is applied registry fix that can broke activation.