No boot on new PC

[Oxflo]

Alright. I decided to rebuild my PC this month and finally got all the parts. I'm having trouble getting it to boot or go into bios or anything really. No video output or anything. I went from a Ryzen 5 1400 on b350 with a 1060 6gig to a Ryzen 7 3800x on x570 with a 2080 super. Go to power it on and ram lights up, gpu and cpu fans spin. I'm using HDMI as my graphics card only has HDMI and DP but my monitor currently only has VGA, DVI, and HDMI just in case that's important for some reason. I put the CPU and GPU on my old B350 mobo with the most current bios update and it reads everything properly via BIOS. My X570 motherboard has EZ troubleshooting LEDs on it and the one labeled "CPU" is lit up. I made sure everything was plugged in, I re-installed the CPU and even got a friend who has more experience than I do building come and check it out and he says he's at loss and that the board was most likely DOA. I've read forums of people having trouble getting 3000 series to work for some reason but nobody has clear solutions to there problems as far as I can tell. Any help would be much appreciated as I am running out of time to return my mobo.

[RadiatingLight]

If it works on one board, but doesn't on the other, then the board is dead. (assuming you plugged everything in correctly. Maybe the motherboard needs 2 CPU 8-pin connectors? or 8+4?)

 

It's worth making sure that EVERYTHING is the same except for the board though. Try the same RAM, same GPU, same PSU, etc. but just swap the boards. If the B350 posts but the X570 doesn't, then board is DOA.

[zeusthemoose]

What model is your motherboard? Many motherboards need to get a bios update before they work with 3rd gen ryzen. If that is the case there are some places where you can get them to send you a kit with an older cpu to update the bios then send back the kit.

[Oxflo]

My mother board is a MSI MPG X570 gaming pro carbon. I used exactly the same parts except for the mobo. Thank you guys for your very fast responses!

[Oxflo]

My motherboard doesn't need cpu installed or anything to do bios update. I will try that and get back to guys with further questions/issue if any come up!

[zeusthemoose]

It seems that all x570 motherboards support ryzen 3rd gen out of the box. So updating the bios probably won’t fix anything, it is probably a dead motherboard like your friend and radiatinglight said. Sorry for the confusion.

[Oxflo]

Also my motherboard does have an 8+4 eps setup. Is it required? I've read that the extra 4 pins are for hefty overclocking which I'm not doing currently.