asrock b550 phantom gaming 4 ac

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   I have an old asrock b550 phantom gaming 4 ac motherboard and I wanted to use it for an emachine with downgrading to a Ryzen 4600G CPU.  I installed the latest (non) BIOS and when I swapped out the Ryzen 5800X for the 4600G, the CPU and DRAM lights are stuck on and RED and will not post.

Is the 4600G compatible with the motherboard.  Most updates say 50000G series support and fixes.  I'm afraid one of them has borked 4600G support or something.

Any advice on what may be the issue?

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MarkJohnson Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2020 Status: Offline Points: 167	Post Options Post Reply Quote MarkJohnson Report Post Thanks(0) Quote Reply Topic: asrock b550 phantom gaming 4 ac Posted: 23 hours 28 minutes ago at 2:12pm
	I have an old asrock b550 phantom gaming 4 ac motherboard and I wanted to use it for an emachine with downgrading to a Ryzen 4600G CPU. I installed the latest (non) BIOS and when I swapped out the Ryzen 5800X for the 4600G, the CPU and DRAM lights are stuck on and RED and will not post. Is the 4600G compatible with the motherboard. Most updates say 50000G series support and fixes. I'm afraid one of them has borked 4600G support or something. Any advice on what may be the issue?
	Intel i9-9900KF ASRock Fatality B360 Gaming K4 16GB Kingston HyperX Fury 2666 Mhz Evga GTX 1650 4GB Corsair 850 Watt RM850 PSU Cooler Master MasterBox NR600P 512GB Micron 2300 NVMe

MarkJohnson Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2020 Status: Offline Points: 167	Post Options Post Reply Quote MarkJohnson Report Post Thanks(0) Quote Reply Posted: 23 hours 2 minutes ago at 2:38pm
	I couldn't find an edit post option. So I want to add that I reinstalled my 5800X and it posts just fine (BIOS 3.40). But 4600G won't post at all.
	Intel i9-9900KF ASRock Fatality B360 Gaming K4 16GB Kingston HyperX Fury 2666 Mhz Evga GTX 1650 4GB Corsair 850 Watt RM850 PSU Cooler Master MasterBox NR600P 512GB Micron 2300 NVMe

MarkJohnson Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 19 May 2020 Status: Offline Points: 167	Post Options Post Reply Quote MarkJohnson Report Post Thanks(0) Quote Reply Posted: 22 hours 59 minutes ago at 2:41pm
	Also, the 4600G is listed as supported on the "CPU support list"
	Intel i9-9900KF ASRock Fatality B360 Gaming K4 16GB Kingston HyperX Fury 2666 Mhz Evga GTX 1650 4GB Corsair 850 Watt RM850 PSU Cooler Master MasterBox NR600P 512GB Micron 2300 NVMe