Question After replacing my motherboard is not responding

Apr 23, 2019
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Hello guys,
I have a terrible problem and I need some advice. Recently I bought motherboard Intel DQ67SW because I wanted to replace my previous one. It seems like everything is plugged correctly, but still computer is not responding. The only thing that appears to work is a green standby light and fans.
  • Motherboard: Intel DQ67SW
  • Processor: i5 2500
  • Graphics card: NVIDIA GTX 750 Ti
What can be causing this?
Thanks in advance