X399 Taichi - flash, no post

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   So I brought my PC to work for cleaning it out and updating BIOS while I was at it. I used UEFI to flash the 2.30 bridge and after it rebooted, no post. I tried using flashback with as low as 1.30, which was my starting point, but it flashes then goes to solid green. Anything else to do or do I have to find and order a new MB?

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smallbird Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Apr 2023 Status: Offline Points: 95	Post Options Post Reply Quote smallbird Report Post Thanks(0) Quote Reply Topic: X399 Taichi - flash, no post Posted: 10 Apr 2023 at 5:21pm
	So I brought my PC to work for cleaning it out and updating BIOS while I was at it. I used UEFI to flash the 2.30 bridge and after it rebooted, no post. I tried using flashback with as low as 1.30, which was my starting point, but it flashes then goes to solid green. Anything else to do or do I have to find and order a new MB?

SerchTech Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 16 Oct 2022 Location: Spain Status: Offline Points: 1335	Post Options Post Reply Quote SerchTech Report Post Thanks(0) Quote Reply Posted: 10 Apr 2023 at 7:43pm
	If you think it's worth keeping your X399 Taichi and avoiding buying a new motherboard (ASRock or other brand): 1st - CPU model? 2nd - Was your PC working fine before physically brought in? 3rd - Did you disassemble all the parts before clean the PC? (CPU, GPU, PSU, DDR4, cables ... etc) Did you reassemble correctly after cleaning? If you consider that researching this problem is a waste of time and you prefer to buy a new motherboard (ASRock or another brand): So I wish you good luck with your choice
	X399 Taichi (4.03) Threadripper 2950X DDR4 2 x HX432C16FB3K2/32

smallbird Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Apr 2023 Status: Offline Points: 95	Post Options Post Reply Quote smallbird Report Post Thanks(0) Quote Reply Posted: 10 Apr 2023 at 8:15pm
	I most definitely don't think it's a waste of time. Still a good workhorse. CPU Ryzen 9 1950X Was working fine. I did not disassemble before cleaning. Flashing was done after cleaning so it worked fine afterwards. I've been working with PC repair so flashing BIOS is nothing new but first time I've ran into this issue and also flashback giving error.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22793	Post Options Post Reply Quote Xaltar Report Post Thanks(1) Quote Reply Posted: 10 Apr 2023 at 8:47pm
	Pull all but one stick of RAM and leave the system powered for 20mins or so. I had a similar issue with my X399 Phantom Gaming 6 when I first built my system. I am not sure if the flashback is meant to stay lit after completion or not but on the off chance it was successful it could take anywhere up to 10 mins for the first post. If that doesn't work, contact ASRock via support ticket: http://event.asrock.com/tsd.asp Good luck.


smallbird Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Apr 2023 Status: Offline Points: 95	Post Options Post Reply Quote smallbird Report Post Thanks(0) Quote Reply Posted: 10 Apr 2023 at 9:28pm
	Thanks. I'm on it. Pulled all RAM. Doing Flashback. Leaving it for ~20min. Then starting and let it stay on for ~20min.

smallbird Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Apr 2023 Status: Offline Points: 95	Post Options Post Reply Quote smallbird Report Post Thanks(1) Quote Reply Posted: 10 Apr 2023 at 10:18pm
	It's alive! Everything back into place but for some reason it doesn't detect RAM in B1+2 with 8 RAM config, 4 was fine. I'm running 128GB so got full house. But it's still 96GB and I don't really utilize it these days anymore and retiring this PC very soon.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22793	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 11 Apr 2023 at 9:49pm
	May need to reseat the CPU. It's a fairly common issue with these large socket boards. Glad to hear you got it up and running again. The 1950x is still more than up to any task you can throw at it.


smallbird Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Apr 2023 Status: Offline Points: 95	Post Options Post Reply Quote smallbird Report Post Thanks(0) Quote Reply Posted: 13 Apr 2023 at 12:55am
	Well, it's up and running but it keeps crashing like crazy now. I've NEVER had any issues before flashing BIOS and now I get bluescreens, kept completely freezing on 1 particular game update so had to uninstall and install from scratch instead. Only running 32GB RAM now. But I'll run Memtest with all 8 sticks tomorrow and maybe reseat CPU. Bit of a hassle on the 1950x but anything that helps. Should have just stuck on 1.30 feels like.

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 22793	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 13 Apr 2023 at 1:07pm
	Update your AMD all in one package. That often resolves a lot after a BIOS update. Oddly, sometimes after a windows update too.