Powered down again, added riser card and secondary GPU. Just to ensure the AMI flash didn't miss something, I let the official Gigabyte BIOS tool flash the BIOS again using the B460MDS34HAC.F5a image. BOOM! It now recognized the mobo not as the Y1-V2 mobo, but a regular DS34H AC mobo. Once this was done, WITHOUT REBOOTING, I launched Gigabyte's BIOS tool. This flashed the boot block, the main block, and lastly the NVRAM. What worked was launching the AFUWIN GUI, loading the B460MDS34HAC.F5a BIOS image, and choosing to program all blocks (and checking the box to skip the checksum). Searching online for AMI UEFI patching pulled up an old Phoronix article for MSI. Interestingly I never got prompted to enter "E". Looking at GIGABYTEs site confirmed a new firmware update for the. WHY would they do that? Since I couldn't get the official Gigabyte BIOS to load, I followed your steps above. Unhook the riser, and all is well.Īfter much time on Google, I found this reddit and came to realize CyberPower PC had put their own custom BIOS on the machine. The lights came on, CPU fan came on, but no video. When I hooked up the riser, the computer was unbootable. You don't need a full x16 slot, just an x1 will do. Great tip, and thank you! I got my B460M DS3H AC mobo in a CyberPower PC off Amazon, and was trying to add a second GPU via a riser for crypto mining.
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