New X570 Steel Legend display not working

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   I have a new X570 Steel Legend motherboard with a new 3700x with 16gb 3200 of new  G.SKILL Ripjaw ram mounted in A2/B2. This setup is upgrading my current system so I am using my existing 600W power supply.  My power supply has 2x4 ATX which I connected to the 8 pin on the mobo.  The manual says to connect another 4 pin ATX but my power supply doesn't not have another one available.  The old mobo had the same setup but I only used the 8 pin and it worked fine.  Upon booting the POST lights blink as it is booting then go out.  Everything seems to be working fine but I cannot get the display to work.  

I am thinking it has to do with either the power supply not having that other 4 pin connector or maybe something with the RAM but the G.Skill is supposed to work with this motherboard. If that other 4pin ATX is required can I use something like a molex to atx adapter or should I get a new  one?  

Here is a link to the RAM
https://www.newegg.com/g-skill-16gb-288-pin-ddr4-sdram/p/N82E16820232181?Item=N82E16820232181

Here is a link to the RAM compatibility and it looks like I might have been mistaken as it is not listed as being compatible by the part number. Not sure if that is my problem or not.  Any advice would be greatly appreciated.  
https://www.asrock.com/MB/AMD/X570%20Steel%20Legend/index.asp#MemoryMS

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deeve Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Sep 2019 Location: Hillsboro Status: Offline Points: 4	Post Options Post Reply Quote deeve Report Post Thanks(0) Quote Reply Topic: New X570 Steel Legend display not working Posted: 22 Sep 2019 at 12:50pm
	I have a new X570 Steel Legend motherboard with a new 3700x with 16gb 3200 of new G.SKILL Ripjaw ram mounted in A2/B2. This setup is upgrading my current system so I am using my existing 600W power supply. My power supply has 2x4 ATX which I connected to the 8 pin on the mobo. The manual says to connect another 4 pin ATX but my power supply doesn't not have another one available. The old mobo had the same setup but I only used the 8 pin and it worked fine. Upon booting the POST lights blink as it is booting then go out. Everything seems to be working fine but I cannot get the display to work. I am thinking it has to do with either the power supply not having that other 4 pin connector or maybe something with the RAM but the G.Skill is supposed to work with this motherboard. If that other 4pin ATX is required can I use something like a molex to atx adapter or should I get a new one? Here is a link to the RAM https://www.newegg.com/g-skill-16gb-288-pin-ddr4-sdram/p/N82E16820232181?Item=N82E16820232181 Here is a link to the RAM compatibility and it looks like I might have been mistaken as it is not listed as being compatible by the part number. Not sure if that is my problem or not. Any advice would be greatly appreciated. https://www.asrock.com/MB/AMD/X570%20Steel%20Legend/index.asp#MemoryMS

Ray62 Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 01 Jul 2018 Location: Germany, Berlin Status: Offline Points: 706	Post Options Post Reply Quote Ray62 Report Post Thanks(0) Quote Reply Posted: 22 Sep 2019 at 8:16pm
	The 4 pin ATX is not required, but would support additional power for OC or a 3900X. And a GPU is installed on the board too? I ask that, because there is no related info in your post and the 3700X comes without GPU.
	Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE \| AMD Ryzen 9 3900X \| Scythe Mugen5 \| 2x16GB F4-3200C14D-32GTZ@3466 \| ASUS GeForce GTX 1080 Ti FE

deeve Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Sep 2019 Location: Hillsboro Status: Offline Points: 4	Post Options Post Reply Quote deeve Report Post Thanks(0) Quote Reply Posted: 22 Sep 2019 at 10:15pm
	I am running a GPU. RTX2070 and had the same problem so I removed it thinking that could be part of the problem. I did not think that the CPU didn't have an integrated GPU. Its been a while since I build a system. Like 10 years.