Can't activate windows 8

I get this message:
The activation server reported that the product key has exceeded its unlock limit. (Error code: 0xC004C008)

Any idea why this is happening, I did a clean reinstall of windows 8 after flashing the BIOS. I haven't changed any hardware, I am using the same motherboard. I haven't used my windows 8.1 disc for any other PC either.
5 answers Last reply Best Answer
More about activate windows
  1. Home built machine or store purchased?
  2. FALC0N said:
    Home built machine or store purchased?

    It is home built.
  3. Best answer
    You're re-installing an OEM copy of Windows. Contact MS to get their OK and you should be fine.
  4. Have you tried phone activation?
  5. Yeah, I guess I'll try contacting microsoft. Thanks.
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