Need urgent help. I upgraded from a R3 1200 to a R5 5600 on my GA-AB350M-HD3 Motherboard. Before changing out the CPU, I made sure to update the BIOS in the correct order and steps (F22b current -> F31 -> F51g). I boot it up with the old CPU, it boots fine

So I swap the R5 5600 in along with a Deepcool AK400 CPU Cooler. Upon boot, I first get the “New CPU installed FTPM NV corrupted” message and I pick Option Y because I don’t use any encryption of any sort.

After that, it boots into Windows and everything is fine. I notice my CPU fan isn’t spinning because the CPU fan cable was in the way. So I shut my PC down and re-clip the CPU fan to adjust the cable and get it out of the way. I turn it on again (everything in the PC turns on for like a second then dies but turns back on) and the CPU fan is spinning now but it doesn’t post. No BIOS or Windows or anything. My monitor gets no signal.

I’ve seen people say to reseat RAM, GPU, check the mounting. So I do all of those. I reseat the RAM, then the GPU, then I tighten the cooler mount a little more to secure it. Still no boot. Please please, what do I do??