Intel Desktop Board 01 21 B6 E1 E2 Er -

The code shows ER, the HDD spins, but the monitor remains black.
Diagnosis: The BIOS initialized everything, but the GPU was not ready. This happens with modern graphics cards lacking legacy VBIOS.
Fix: Use an old GeForce 8400 GS or Radeon HD 5450. Alternatively, flash the motherboard to the latest BIOS version (if you can borrow a working GPU).

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Intel boards from this era are notorious for failing electrolytic capacitors. intel desktop board 01 21 b6 e1 e2 er

| Token | Likely meaning | |---|---| | 01 | Early POST/initialization stage or board revision segment | | 21 | Later POST stage (memory/chipset/PCI init) or board ID | | B6 | Silicon or board stepping/revision | | E1 / E2 | Engineering revision or firmware branch | | ER | Engineering release / evaluation revision | The code shows ER , the HDD spins,

If this code is printed on a sticker on the BIOS chip (the small 8-pin or 32-pin chip usually labeled "Winbond" or "Macronix"): Intel boards from this era are notorious for

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