B450 Gaming-ITX video out off/on

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   Started assembling system with Ryzen 3200G on just-unwrapped Fatal1ty B450 Gaming-ITX/ac today. Upon boot, in BIOS (3.7), video display keeps turning off sporadically. Near impossible to use, but managed to upgrade to BIOS v4.2 -- no change in display behavior. Tried  different RAM and PSU, all working in other systems: NO CHANGE. Driving me crazy. 

ANYONE have similar problem & solved it??? 

Is this only RMA-able??

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mcssi Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Aug 2021 Status: Offline Points: 50	Post Options Post Reply Quote mcssi Report Post Thanks(0) Quote Reply Topic: B450 Gaming-ITX video out off/on Posted: 22 Aug 2021 at 4:52am
	Started assembling system with Ryzen 3200G on just-unwrapped Fatal1ty B450 Gaming-ITX/ac today. Upon boot, in BIOS (3.7), video display keeps turning off sporadically. Near impossible to use, but managed to upgrade to BIOS v4.2 -- no change in display behavior. Tried different RAM and PSU, all working in other systems: NO CHANGE. Driving me crazy. ANYONE have similar problem & solved it??? Is this only RMA-able??

Khun_Doug Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 29 Mar 2020 Location: Poconos PA Status: Offline Points: 1025	Post Options Post Reply Quote Khun_Doug Report Post Thanks(0) Quote Reply Posted: 23 Aug 2021 at 4:25am
	How far into the install/setup do you get? What type of monitor are you using, and how is it cabled?

mcssi Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Aug 2021 Status: Offline Points: 50	Post Options Post Reply Quote mcssi Report Post Thanks(0) Quote Reply Posted: 23 Aug 2021 at 4:46am
	Thanks for asking Khun_Doug: HDMI to HDMI, same cable used for 2 other systems at that desk, no problems with either cable or monitor. Upgraded the BIOS to 4.6 (latest) and still no joy. Also tried other RAM, other PSU, and a new CPU -- Ryzen 5600G: none work with the onboard video. I installed a VGA card in the PCIe 16x slot, and hooked up the monitor to it. The result was exactly as expected -- it works perfectly. So the problem really seems to be in the motherboard, in the onboard graphics section. Can't be in the CPU, as I tried 2 of them. The intermittent nature of the problem makes me hope some obscure thing can fix it, but I'm starting to think it can only be fixed at the factory.

mcssi Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 22 Aug 2021 Status: Offline Points: 50	Post Options Post Reply Quote mcssi Report Post Thanks(0) Quote Reply Posted: 23 Aug 2021 at 4:47am
	Oh, and with the add-on VGA cared, W10 Pro got installed/updated without a hitch. But switch back to onboard, and the problem comes right back.