Motherboard won't post/Flashing White light

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   I updated my asrock x370 killer sli to version 3.0 via the BIOS install and after it "successfully" installed, my motherboard won't post. There is a flashing white light blinking underneath my chipset and no information online tells me what that means. All my hardware was working prior to the update and here is a list of my hardware:
Asrock x370 killer sli 
Evga GTX 1070
Corsair Vengeance LPX 
AMD Ryzen 2700x 
OCZ Fatality 750W

I have reseated my CPU, ram, and although not recommended after updating, cleared CMOS. 
If I could figure out what to do that would save some work and headaches.

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Acovarru91 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Jan 2019 Location: US Status: Offline Points: 9	Post Options Post Reply Quote Acovarru91 Report Post Thanks(0) Quote Reply Topic: Motherboard won't post/Flashing White light Posted: 06 Jan 2019 at 10:50am
	I updated my asrock x370 killer sli to version 3.0 via the BIOS install and after it "successfully" installed, my motherboard won't post. There is a flashing white light blinking underneath my chipset and no information online tells me what that means. All my hardware was working prior to the update and here is a list of my hardware: Asrock x370 killer sli Evga GTX 1070 Corsair Vengeance LPX AMD Ryzen 2700x OCZ Fatality 750W I have reseated my CPU, ram, and although not recommended after updating, cleared CMOS. If I could figure out what to do that would save some work and headaches.

xhue Members Profile Send Private Message Find Members Posts Add to Buddy List Groupie Joined: 17 Aug 2018 Status: Offline Points: 634	Post Options Post Reply Quote xhue Report Post Thanks(0) Quote Reply Posted: 06 Jan 2019 at 9:39pm
	Try taking out 1 stick of RAM. Take out the PSU 230V/110V cable, take out the button cell battery (CMOS one). Press power on button for 15 sec. Put the battery back in, plug in the power cord in the PSU. Try booting again. If this doesn't help, I'm afraid you may need another mobo. P.S. Oh, my! BIOS v3.00?!?! This version doesn't support Ryzen 2! You need v4.50 or later for that CPU!

naarv Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 23 Sep 2021 Status: Offline Points: 15	Post Options Post Reply Quote naarv Report Post Thanks(0) Quote Reply Posted: 23 Sep 2021 at 2:58pm
	Hey so my PC randomly crashed and I'm getting the same flashing lights and it won't post. How did you manage to fix it? Thanks.