AB350 Pro4 - BIOS flash no boot 2 graphic cards

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   Hello, I got a new system / mainboard and did a BIOS
flash from 3.20 to 3.40 everything went fine, but the second from 3.40 to 4.60
I've no boot screen, it's just black when I'm using two 1080 Tis.
I know that SLI is only possible at X370 Mainboards, but
that's not the plan.

It's only possible to get a bootscreen when using one of
two1080 Ti, but not both at the same time, each cards were tested and are ok.
Downgrading to 4.40, 3.40 (which once worked when
updating from 3.20 with both cards), 3.30 doesn't help, trying again now 3.20,
but I don't think this will help...
Can't really say what's that type of bug?!

Removing everythime the BIOS battery and clear CMOS were
often done.
All BIOS flahes were done with Instant flash (V2121) and an original BIOS file from http://www.asrock.com/mb/AMD/AB350%20Pro4/#BIOS
No matter if the monitor is pluged via DP in the 1st or 2nd card, no boot screen.
No settings have been changed, no overclocking, nothing.

System:
AMD Ryzen 7 1800X
ASRock AB350 Pro4
2 x 8 GB G.Skill Trident Z F4-3200C14D-16GTZ
2 x Gigabyte GTX 1080 Ti
250 GB Samsung 960 Evo

be quiet! Dark Power Pro 11 850 Watt

Edited by Shadow86 - 27 Jan 2018 at 7:09pm

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Shadow86 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 27 Jan 2018 Status: Offline Points: 3	Post Options Post Reply Quote Shadow86 Report Post Thanks(0) Quote Reply Topic: AB350 Pro4 - BIOS flash no boot 2 graphic cards Posted: 27 Jan 2018 at 6:45pm
	Hello, I got a new system / mainboard and did a BIOS flash from 3.20 to 3.40 everything went fine, but the second from 3.40 to 4.60 I've no boot screen, it's just black when I'm using two 1080 Tis. I know that SLI is only possible at X370 Mainboards, but that's not the plan. It's only possible to get a bootscreen when using one of two1080 Ti, but not both at the same time, each cards were tested and are ok. Downgrading to 4.40, 3.40 (which once worked when updating from 3.20 with both cards), 3.30 doesn't help, trying again now 3.20, but I don't think this will help... Can't really say what's that type of bug?! Removing everythime the BIOS battery and clear CMOS were often done. All BIOS flahes were done with Instant flash (V2121) and an original BIOS file from http://www.asrock.com/mb/AMD/AB350%20Pro4/#BIOS No matter if the monitor is pluged via DP in the 1st or 2nd card, no boot screen. No settings have been changed, no overclocking, nothing. System: AMD Ryzen 7 1800X ASRock AB350 Pro4 2 x 8 GB G.Skill Trident Z F4-3200C14D-16GTZ 2 x Gigabyte GTX 1080 Ti 250 GB Samsung 960 Evo be quiet! Dark Power Pro 11 850 Watt Edited by Shadow86 - 27 Jan 2018 at 7:09pm

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: 27 Jan 2018 at 9:06pm
	your problem is two fold here first the latest bios is erm how to say ? not ideal ............. second problem seems to be another instance of 'traces of later bios' remaining while flashing back solution ? if you have flashed back to bios 3.20 then find the latest DOS version of bios and use the DOS method to flash this seems to properly erase and then write the bios chip properly then normal flash to the last bios version you was stable and happy with
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold