Troubleshooting Intel Desktop Board Driver Issues (21-B6-E1-E2)
Before attempting any driver work, you must understand what the motherboard is telling you. Intel Desktop Boards use a standardized set of BIOS (usually AMI or Intel proprietary) POST codes. intel desktop board 21 b6 e1 e2 driver work
When an option ROM driver is corrupt, missing, or incompatible, the board freezes at E2. the board freezes at E2.