Question Desktop doesn't power up all the way

Jan 31, 2021
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I'm having an issue where my desktop won't power up all the way. It's about 6 years old. I press the power button, all the fans spin up and I see the leds on my 2070 turn on. I don't see any mb lights staying on. Then it just stays there. The peripherals don't light up (making me think they're not getting power, but the erhernet port light is on), and I don't see anything on the monitor.

I just got a new PSU (evga supernova 750) and swapped it in thinking it was a power issue but I'm seeing the same problem. I'm a bit stuck now as I'm not sure what direction to take next and would appreciate any help.

Thank you.