Codes like can indicate insufficient voltage to the CPU. Ensure the 4-pin or 8-pin CPU power connector is firmly seated and that the PSU is providing stable 12V rails. Step 4: Disconnect Peripherals
Insert only stick into the primary slot and try to boot. Step 2: Clear the CMOS Locate the "BIOS Config" jumper on the motherboard. Move it from pins 1-2 to pins 2-3 (Maintenance Mode). Intel Desktop Board 21 B6 E1 E2 Er
💡 If the board continues to hang on "E1" or "E2" despite trying different RAM, the memory controller inside the CPU may be failing, or the motherboard traces have degraded. Codes like can indicate insufficient voltage to the CPU
The codes and E2 are almost always related to RAM. This can be caused by: Unseated RAM sticks. Dust in the DIMM slots. Intel Desktop Board 21 B6 E1 E2 Er