If your BIOS is set to UEFI mode (Common on PCs from 2012 onwards), Windows 7 Loader 2.1.4 will fail and may corrupt your boot configuration data (BCD).
Replacing your motherboard may wipe the emulated SLIC, necessitating a fresh installation of the loader. Advancing Your Activation Ativador Do Windows 7 Loader 2.1.4 -32 E 64 Bits- --INSTALL
Because Windows 7 reached End of Life (EOL) in January 2020, attackers have repackaged old versions of the Loader with cryptominers, ransomware, or keyloggers. The "2.1.4" you download from a random site is almost certainly bundled with: If your BIOS is set to UEFI mode