If you are trying to use this board with Windows 10 or 11, official drivers might not exist. However, drivers for Windows 7 or 8 often work if installed in Compatibility Mode Avoid Generic Sites:
, it can often run Windows 10 using generic drivers provided by Microsoft. Driver Availability intel desktop board 21 b6 e1 e2 driver work
E1 is a quirky code. It means all core drivers have loaded, and the board is waiting for user input (keypress or USB device enumeration) stuck in a power management handshake. If you are trying to use this board