AnsweredAssumed Answered

Ryzen 5 3600 won't POST in existing mobo.

Question asked by papahomer on May 4, 2020
Latest reply on May 16, 2020 by hardcoregames™

Starting configuration:

AMD Ryzen 3 1200 Desktop Processor
ASRock AB350 PRO4 ATX Motherboard
G.SKILL FORTIS Series 16GB (2 x 8GB) DDR4 SDRAM (PC4 19200)  Model F4-2400C15D-16GFT

Gigabyte Geforce GTX 1050 2GB GDDR5 128 Bit PCI-E Graphic Card (GV-N1050OC-2GD)

 

Replaced Ryzen 3 with AMD Ryzen 5 3600.

Power & lights.  All fans (including CPU) spin.  No POST.  No beep.  Does not get to BIOS.  No display.  Keyboard lights do not light.  Power cycles every 25 seconds.

 

I re-installed the Ryzen 3.  Updated BIOS to 5.80

Re-installed Ryzen 5.  Same result:  No POST... does not get to BIOS ...Power cycles every 25 seconds.

 

Unplugged and removed CMOS battery.

Same result:  No POST... does not get to BIOS ...Power cycles every 25 seconds.

 

I'm at a loss.  Any ideas appreciated.

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