Upgraded to Ryzen 5 3600, PC now fails to POST with 3600 AND 1400

[Maryethu]

Just to start, I now realize I have already made a pretty major mistake by not flashing my bios before installing the new cpu, but alas I'm already far past that point. My computer used to have a Ryzen 5 1400, and this morning my new cpu arrived so I immediately powered off the pc and threw it in. Since then, my pc has not managed to POST. I have tried resetting the CMOS, both by removing the battery and using the mobo header. I have tried to remove different parts of my PC to get it to POST, to no avail (e.g. one stick of ram in every dimm slot, removing all drives, removing all extension cards, usb drives, etc.) I have replaced the 1400 with its original heatsink (the one I've been using for the last few years) in the PC, and tried different hardware configs. Nothing I have tried can get the PC to POST.

 

Setup:

Ryzen 5 1400 / Ryzen 5 3600

Asrock AB350 Pro4 Mobo

2x4GB 3200 DDDR4

Asus Radeon RX480 4GB

Samsung 860 EVO 1TB SSD

WD Blue 5400rpm 1TB HDD

Corsair CX450M PSU

TP-Link wifi card

[homeap5]

Even with R5 1400? Do you try to start with your old CPU?

You must first update BIOS using old CPU.

Check if your motherboard supports R5 3600.

 

[Maryethu]

Just now, homeap5 said:

Even with R5 1400? Do you try to start with your old CPU?

You must first update BIOS using old CPU.

Check if your motherboard supports R5 3600.

 

Yep, I've tried seemingly every combo with both cpu's, neither manages to POST

[WkdPaul]

* Threads merged *

[Maryethu]

1 hour ago, Rogerzz said:

You aren't plugging in the monitor into the motherboard instead of GPU are you?

no, the mobo's video output has never worked.