Building a budget PC for my wife. Upon completion of the build I turned it on and... nothing. The machine will not post. I am not sure what is wrong because the speaker is not making any beeps, and everything appears to be working. All fans are spinning, lights are on, keyboard is detected, etc etc. What could the culprit be? Unfortunately I don't have the luxury of being able to test each individual part because my PC is from the DDR3 era so basically nothing is compatible. The only things I could conceivably test are the GPU and power supply, which I do not think are the problem.
Has anyone experienced this before? I'm at a total loss. Could the motherboard be the problem even though it appears everything is getting power? Maybe the RAM is bad?
It has a Ryzen 1300x with an RX 560 gpu and 8gb of RAM. 450W PSU, 128GB M.2 SSD, 1TB HDD.
Any tips are appreciated.
EDIT: I Forgot to add that things are getting warm which leads me to believe that power is being delivered and no part is cold and dead.