TLDR: The debug LED is on and I don't know why. Checked the pins and power requirements and nothing was amiss. socket and MB look fine, so IDK whats up.
The long version
So after my potato that I built 5 years ago finally bit the dust I decided it was time to do a ryzen build. Below are the specs.
MB: MSI Gaming Edge Wifi X570 chipset
CPU: Ryzen 7 3800x
RAM: 16 GB DDR4
Video Card: Nvidia 1070 Ti
Memory: 512 gb Samsung 970 SSD
PSU: 700 W
I had several parts delivered over a multiday period (i.e. the MB and CPU arrived before the SSD). So I got started and did a fitup build outside of the case with just the MB, CPU, Ram, and PSU. I was able to get everything together just fine and I went to power everything up and fans/lights powered up but I got no Post Beep, which was disconcerting.
The next day I got everything inside the case and went to hookup the Video card to the PSU and... whoops I did't have the right cable. So I tried booting up with the card in but not hooked up to the PSU and had my monitor connected to the MB HDMI output so I could at least do some work in the BIOS; again things "powered up" like the fans spun up and the LED lit up but this time I got no video feed.
Fast-forward another day and now I finally have all the pieces to the build. I've got everything in there, the proper cable for the video card, the ssd, memory, everything. And I got a similar result, powered up fans started running, lights lit up, but no jazz on the the video feed. I did notice four things however:
- The EZ Debug LED on the MB for the CPU came on when it hadn't been on before
- The CPU fans weren't really "on" the were just kind of pulsing, so maybe it needs more power.
- I could turn on the computer using the power button, but could not turn the computer off without turning off the power supply itself.
- The power cable I had for the CPU was a standard 6 pin one, but there was another 4 pin header on the MB. Apparently it is for overclocking, which made sense. But do I need it to simply boot things up?