Intel Desktop Board 21 B6 E1 E2 Driver Work
Remove all RAM sticks. Insert one known-good stick into the primary slot (usually DIMM0, blue slot). Code E1 often indicates the driver failed to assign ranks to multiple sticks.
Reboot. The board will load default in-box Microsoft drivers, bypassing the problematic Intel drivers that triggered the POST error. intel desktop board 21 b6 e1 e2 driver work
