Based on this specific sequence ( 01 -> 21 -> b6 -> e1 -> e2 -> er -> new ), here is what you should check first.
| Code | Meaning (Typical for Intel/AMI/Award BIOS) | |------|---------------------------------------------| | 01 | Processor test – start. May indicate CPU failure or voltage issue. | | 21 | Memory refresh test – likely stuck on DRAM detection. | | B6 | Early chipset initialization (often Northbridge). | | E1 | Legacy resource conflict or SMBus problem. | | E2 | Super I/O initialization failure (keyboard/mouse controller). | | ER | Generic error halt – system unable to boot. | intel desktop board 01 21 b6 e1 e2 er new
Elias set the board on his workbench under a bright lamp. The "New" condition was startling. The capacitors were still perfectly cylindrical, not bulged or leaking. The socket lever snapped shut with the crisp sound of factory-fresh friction. Based on this specific sequence ( 01 ->