Intel Desktop Board 01 21 B6 E1 E2 Er Jun 2026

The board resets before reaching E2 . Power delivery failure. The PSU might be sending “Power Good” signal too early. Fix: Replace PSU. Any modern 300W+ unit works, but ensure it has a -5V rail if you have an ISA slot (unlikely for Intel boards). Disconnect all drives and fans except CPU fan.

Since you searched for all six codes together, you are likely experiencing one of three failure patterns: intel desktop board 01 21 b6 e1 e2 er

: LGA 1155, which supports 2nd and 3rd Generation Intel Core processors (e.g., i7-2600, i5-3470). The board resets before reaching E2

: Intel Q67 Express, which supports Intel Active Management Technology (Intel AMT) 7.0 for remote IT maintenance and security. i5-3470). : Intel Q67 Express

Use the command wmic baseboard get product,Manufacturer to pull the exact model from the BIOS.