Memory errors are among the most common reasons for a failed POST.
Users with these markings often find they own an Intel DH61 series board (e.g., DH61BE , DH61CR, or DH61WW). 2. Technical Specifications (General for this Class)
: This is the vendor prefix of a hardware address. The standard 00-21-B6 Organizationally Unique Identifier (OUI) belongs to Intel Corporation, meaning this label records the integrated Ethernet port's permanent MAC address. intel desktop board 01 21 b6 e1 e2 er
in BIOS or Intel Management Engine logs
: Typically features 4 DIMM slots supporting dual-channel DDR3 1333/1066 MHz memory up to 32GB. Expansion : 1 x PCIe 2.0 x16 slot for dedicated graphics. 1 x PCIe 2.0 x4 slot. 1 x PCIe 2.0 x1 slot. 1 x Legacy PCI slot. Storage & I/O : Memory errors are among the most common reasons
| Specification | Details | | :--- | :--- | | | Supports 2nd and 3rd gen Intel® Core™ i7, i5, i3, Pentium®, and Celeron® processors (LGA1155 socket). | | Form Factor | MicroATX (a compact, versatile size suitable for most standard computer cases). | | Memory Support | Up to 16 GB of dual-channel DDR3 memory (supports 1333/1066 MHz DIMMs). | | Graphics | Integrated Intel® HD Graphics with DVI-D and VGA ports for display connectivity. | | Expansion Slots | 1 x PCI Express 2.0 x16 slot (for a dedicated graphics card), 2 x PCI Express 2.0 x1 slots, and 1 x PCI Conventional slot. | | Storage | 4 x SATA ports (2 x 3.0 Gb/s and 2 x 6.0 Gb/s), providing fast connectivity for modern SSDs and HDDs. | | Audio | 6-channel (5.1) high-definition audio using the Realtek ALC662 codec. | | USB Ports | Supports up to 10 USB 2.0 ports (4 back panel, 6 via internal headers). |
Typically includes Ethernet (RJ-45), USB 2.0, and USB 3.0 ports. Context & Availability Technical Specifications (General for this Class) : This
Given Intel stopped making desktop boards in 2013, these boards are now legacy. If er persists after above steps, the board likely has a failed component (PCH, VRM, or BIOS chip corruption beyond recovery).
Disclaimer: The "01 21 b6 e1 e2 er" string is not an official Intel model number but an identifier used in online communities and driver repositories. This guide is based on synthesized information from various user and technical support sources.
This is the very first action the BIOS takes. It signals that the CPU has received power and is beginning its initialization by identifying the type of system reset that occurred. If the process fails here, it suggests a fundamental issue with power delivery, the CPU itself, or a corrupted BIOS.