Question PC won’t POST after replacing Motherboard, CPU and RAM - - - am I doing something wrong ?

[RoshiPR]

I’ve tried multiple intel cpu and mobo and different sets of ram and gave up on intel now.
I currently have a Ryzen 7 X3D CPU with an AM5 mobo and DDR5 RAM.
There's no POST. and the CPU and RAM LEDs are on.

I’ve built multiple PCs before. I’ve reseated the cpu make sure it’s on there I’ve check the mobo pins if it was bent ive done a lot of troubleshooting idk if I’m doing anything wrong at this point I have a feeling it’s the psu at this point I have a 850x from Corsair from like 2018-19 if anyone who had or has the same issue please help me out I’ve spent too much money on this

Edit- I right now have i9900k 32gb ddr4 currently trying to upgrade to ddr5 with better cpu

 

[Lutfij]

Welcome to the forums, newcomer!

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

Since you performed an upgrade, please mention the parts that you've swapped over. Did you breadboard the parts before building your system back with said upgraded parts? Rams populating slots A2 and B2 on your motherboard?

Moved thread from Components section to Systems section.

 

[RoshiPR]

Welcome to the forums, newcomer!

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

Since you performed an upgrade, please mention the parts that you've swapped over. Did you breadboard the parts before building your system back with said upgraded parts? Rams populating slots A2 and B2 on your motherboard?

Moved thread from Components section to Systems section.

Thank you so much I’ll get the exact parts name when I’m home I just figured to reach out and ask for help before I go home