Intel Desktop Board 21 B6 E1 E2 Er -

Most boards carrying this marking utilize the LGA 1155 socket, supporting Intel 2nd and 3rd Generation Core i3/i5/i7 processors (e.g., i7-2600).

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When the system fails its Power-On Self-Test (POST) and gets stuck, it often displays codes on a debug card connected to the motherboard's LPC (Low Pin Count) header. The "E1" and "E2" codes have well-documented meanings in Intel's official technical specifications for other desktop boards. Intel Desktop Board 21 B6 E1 E2 Er

Physical problems are common root causes of hardware failure. Most boards carrying this marking utilize the LGA