New build doesn't post (DRAM LED)

[Stash]

My new build (R5 5600, Sapphire Pulse RX 6700XT, 16GB 3000Mhz Corsair Vengeance DDR4, B350M Pro VD Plus) fails to post and the DRAM debug LED is on. This issue persists through every permutation of memory arrangements. Moreover, this system does post and enters the bios when fitted with a R3 1200 I used to update the mobo bios to the 7B38v2I3 version. I don't understand what the issue here is and I would really appreciate any help or advice you could offer. (I have checked the CPU pins and everything seems to be in order)

[puppo]

i think the motherboard is too old (?) have you checked compatibility? try to swap motherboard since the problem is probably from that. meanwhile try to change ram slot, try with only one and then try every slot 

[NaClKnight]

3 hours ago, Stash said:

My new build (R5 5600, Sapphire Pulse RX 6700XT, 16GB 3000Mhz Corsair Vengeance DDR4, B350M Pro VD Plus) fails to post and the DRAM debug LED is on. This issue persists through every permutation of memory arrangements. Moreover, this system does post and enters the bios when fitted with a R3 1200 I used to update the mobo bios to the 7B38v2I3 version. I don't understand what the issue here is and I would really appreciate any help or advice you could offer. (I have checked the CPU pins and everything seems to be in order)

Let's check one more time to ensure that this MB and BIOS revision explicitly support that CPU via the MoBo website.

 

After that, have you cleared the CMOS on the motherboard? That frequently clears up old or incorrect RAM timings. Your motherboard manual should include steps on how to do this.

 

Lastly, have you tried running one DIMM instead of two? Or changed the RAM to a student DIMM slot if possible?