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Trouble with new PC build

Hi everyone, I’m trying to build a computer with the ASRock B650E Taichi and 7950x3d for first time. Issue is that the computer will not post. What I am seeing:

Upon plugging in power supply, mother board lights up Upon powering system on, cpu tower and case fans spin, ram LEDs are on, but no signal to the monitor. I have the monitor HDMI cable plugged into the motherboard HDMI (currently I have removed GPU to try to isolate problem). The motherboard error display shows a static "00" when system is on, doesn't flash, doesn't change at all. Motherboard has never made a sound, like a beep or anything

What I have tried to fix the problem:

  • Downloaded latest BIOS (version 1.24) and flashed bios per motherboard manual, flashing appears to complete successfully (LED stops blinking per manual), tried this a few times now
  • Reseated RAM, confirmed that it 'clicked' into place
  • Tried clearing CMOS using a pair of scissors across the jumper pins. The manual was not clear on how this was supposed to work, but I unplugged the PSU, completed the circuit across the pins, and pressed the clear CMOS button for awhile. I couldn’t tell if this did anything though.
  • Tried system with and without GPU, and running monitor from both Display Port and HDMI out of GPU, no difference
  • Took off CPU tower, checked CPU pins in the socket (all looked fine, no evidence of bent pins), reseated CPU and CPU tower
  • For the CPU cables to PSU, I have the cables linked to the PSU with the "PSU" label on the connectors plugged into the CPU section of the PSU
  • Reseated the CPU <> PSU cables on both the PSU and motherboard
  • Wore a static bracelet while building computer

The motherboard manual doesn't mention an error code "00", but various forums online say this is a cpu problem. I ended up doing an RMA for the CPU, was sent a new one, and I’m getting the same problems as above with the new CPU.

What else can I try to fix this? Is there anything I’m overlooking?

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