X370 Killer SLI/AC Unable to Post

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   Apologies for the delay... turns out it was a simple matter of taking off the motherboard battery and putting it back in. Who knew. Thanks for the replies! 

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Daemones Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 May 2020 Status: Offline Points: 11	Post Options Post Reply Quote Daemones Report Post Thanks(0) Quote Reply Topic: X370 Killer SLI/AC Unable to Post Posted: 24 May 2020 at 12:56am
	Apologies for the delay... turns out it was a simple matter of taking off the motherboard battery and putting it back in. Who knew. Thanks for the replies!

ThreeDee Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 24 Jul 2019 Location: Billings,MT Status: Offline Points: 2396	Post Options Post Reply Quote ThreeDee Report Post Thanks(0) Quote Reply Posted: 19 May 2020 at 12:22am
	It after you try what datonyb suggests .. and it still doesn't post .. try your older components (cpu?gpu?) and see if it will boot
	\|Ryzen 5 5900\|ASRock X570 Taichi-BIOS 4.60\|2x16GB HyperX Predator RGB 3200@3600 1:1 IF\|ASRock RX 6700XT\|2 x PCIe 4.0 M.2 Drives for OS & Games\|850 WTT Seasonic 80+ Titanium PSU\|Noctua NH-D15\|

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3154	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 19 May 2020 at 12:16am
	my taichi x370 messed about when i installed the 3800x to solve ????????? remove power plug from wall flip out the cmos coin battery from motherboard press and hold case power button 30 secs insert 1 ram stick only in slot a2 refit coin battery plug into wall and power on (wait a few mins for board to memory train) then it will boot to bios save an exit fit 2nd ram stick to b2 boot to bios save n exit boot to bios set ram xmp reboot all fine to windows JUST TO ADD , the cmos clear button dosnt work for me to clear this issue hence the remove battery and drain all capacitors method Edited by datonyb - 19 May 2020 at 12:18am
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

Synapse Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Dec 2019 Status: Offline Points: 62	Post Options Post Reply Quote Synapse Report Post Thanks(0) Quote Reply Posted: 18 May 2020 at 9:33am
	Are you sure that's not a GPU issue? The board POSTs, there's just no video output from the GPU. If you have a PC speaker connected properly, you should hear one short beep when everything is ok, or long beeps if there's video or other failure.

Daemones Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02 May 2020 Status: Offline Points: 11	Post Options Post Reply Quote Daemones Report Post Thanks(0) Quote Reply Posted: 18 May 2020 at 5:41am
	Hello everyone, A couple months ago I inquired about updating the BIOS of my x370 to be able to use newer AMD CPUs, such as the Ryzen 9 3900x. Fourm post [URL=http://forum.asrock.com/forum_posts.asp?TID=14273&KW=&PID=75038&title=updating-bios-on-x370-killer-sli-ac#75038]Here[/URL] I was successful in updating the BIOS to the latest version, 5.8. Had no issues running my previous build. Current build is: AMD Ryzen 9 3900x 3.8 GHz 12-Core Processor ASRock X370 Killer SLI/ac ATX AM4 ADATA XPG SX8200 Pro 2 TB M.2 SSD Geforce RTX 2080S 8GB Because the GPU shipped late, I was only recently able to begin this build. Following installation of the components, everything turned on, however the moba failed to POST. No USB connection was able to be acquired by the motherboard, however all components such as the GPU, CPU, and fans were running as intended. Except CPU fan speed would increase for a few seconds, but decrease for about 10 seconds. Attempts to troubleshoot have been unsuccessful at this time... tried switching out RAM sticks (2x8GB)to different slots, no luck. Also gave the motherboard 10 minutes, since first few POSTs tend to take a while the first few times. If it comes down to it, I'll bite the bullet and purchase a newer motherboard, however I would like to see if there is something I am missing. Any help would be appreciated. Thank you!