Question Black screen, no BIOS, no Boot ?

Oct 20, 2021
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Replaced motherboard, hooked up and then nothing. Black screen, everything appears to be running, but no signal to monitor. Replace processor (...and upgrade), still the same. Return motherboard and get a different one think8ng maybe it was faulty. (Current one) and you guessed it, same issue.

Motherboard: Asus z590 plus wifi
Processor: intel i7
Ddr4 ram
Newer corsair 750 battery? [Moderator --- I think poster means PSU]


Even with minimal cpu, 1 ram stick, ssd, graphics card(and no graphics card), still black screen, no signal. Lights turn on, fans are going, you can heard stuff going, but nothing. Just the abyss and no signal. Checked cables, checked ram position.

Ive tried different monitors, resetting bios, nothing.

This isnt the first time ive built a computer and not even the first time ive had this issue but its been a long time. At a loss of what to try